Home / 66,580,129.20-99,870,193.80-18,711,073.20

Finding the Fourth Proportional to 66,580,129.20, 99,870,193.80 and 18,711,073.20

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Solution

The fourth proportional to 66,580,129.20, 99,870,193.80 and 18,711,073.20 is: 28,066,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580,129.20 : 99,870,193.80 = 18,711,073.20 : x
  2. Step 2: Convert to fraction form
    66,580,129.20/99,870,193.80 = 18,711,073.20/x
  3. Step 3: Cross multiply
    66,580,129.20x = 99,870,193.80 × 18,711,073.20
  4. Step 4: Simplify right side
    66,580,129.20x = 1,868,678,506,689,986
  5. Step 5: Solve for x
    x = 1,868,678,506,689,986/66,580,129.20
  6. Step 6: Final answer
    x = 28,066,609.80

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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.