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Finding the Fourth Proportional to 253,699,101.96, 380,549,362.38 and 78,847,703.70

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Solution

The fourth proportional to 253,699,101.96, 380,549,362.38 and 78,847,703.70 is: 118,271,776.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,699,101.96 : 380,549,362.38 = 78,847,703.70 : x
  2. Step 2: Convert to fraction form
    253,699,101.96/380,549,362.38 = 78,847,703.70/x
  3. Step 3: Cross multiply
    253,699,101.96x = 380,549,362.38 × 78,847,703.70
  4. Step 4: Simplify right side
    253,699,101.96x = 30,005,443,368,162,168
  5. Step 5: Solve for x
    x = 30,005,443,368,162,168/253,699,101.96
  6. Step 6: Final answer
    x = 118,271,776.04

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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.