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Finding the Fourth Proportional to 66,452,273.60, 99,479,344.80 and 39,512,062.40

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Solution

The fourth proportional to 66,452,273.60, 99,479,344.80 and 39,512,062.40 is: 59,149,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452,273.60 : 99,479,344.80 = 39,512,062.40 : x
  2. Step 2: Convert to fraction form
    66,452,273.60/99,479,344.80 = 39,512,062.40/x
  3. Step 3: Cross multiply
    66,452,273.60x = 99,479,344.80 × 39,512,062.40
  4. Step 4: Simplify right side
    66,452,273.60x = 3,930,634,079,248,715.50
  5. Step 5: Solve for x
    x = 3,930,634,079,248,715.50/66,452,273.60
  6. Step 6: Final answer
    x = 59,149,730.57

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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.