Home / 84,219,407.10-126,329,110.65-20,393,999.10

Finding the Fourth Proportional to 84,219,407.10, 126,329,110.65 and 20,393,999.10

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Solution

The fourth proportional to 84,219,407.10, 126,329,110.65 and 20,393,999.10 is: 30,590,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,219,407.10 : 126,329,110.65 = 20,393,999.10 : x
  2. Step 2: Convert to fraction form
    84,219,407.10/126,329,110.65 = 20,393,999.10/x
  3. Step 3: Cross multiply
    84,219,407.10x = 126,329,110.65 × 20,393,999.10
  4. Step 4: Simplify right side
    84,219,407.10x = 2,576,355,768,899,900.50
  5. Step 5: Solve for x
    x = 2,576,355,768,899,900.50/84,219,407.10
  6. Step 6: Final answer
    x = 30,590,998.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.