Home / 21,783,247,189.64-30,060,087,485.96-12,137,478,779.84

Finding the Fourth Proportional to 21,783,247,189.64, 30,060,087,485.96 and 12,137,478,779.84

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Solution

The fourth proportional to 21,783,247,189.64, 30,060,087,485.96 and 12,137,478,779.84 is: 16,749,278,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783,247,189.64 : 30,060,087,485.96 = 12,137,478,779.84 : x
  2. Step 2: Convert to fraction form
    21,783,247,189.64/30,060,087,485.96 = 12,137,478,779.84/x
  3. Step 3: Cross multiply
    21,783,247,189.64x = 30,060,087,485.96 × 12,137,478,779.84
  4. Step 4: Simplify right side
    21,783,247,189.64x = 364,853,673,980,973,416,448
  5. Step 5: Solve for x
    x = 364,853,673,980,973,416,448/21,783,247,189.64
  6. Step 6: Final answer
    x = 16,749,278,507.68

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.