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Finding the Fourth Proportional to 82,488,694.60, 123,733,041.90 and 73,879,350.40

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Solution

The fourth proportional to 82,488,694.60, 123,733,041.90 and 73,879,350.40 is: 110,819,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,488,694.60 : 123,733,041.90 = 73,879,350.40 : x
  2. Step 2: Convert to fraction form
    82,488,694.60/123,733,041.90 = 73,879,350.40/x
  3. Step 3: Cross multiply
    82,488,694.60x = 123,733,041.90 × 73,879,350.40
  4. Step 4: Simplify right side
    82,488,694.60x = 9,141,316,758,587,982
  5. Step 5: Solve for x
    x = 9,141,316,758,587,982/82,488,694.60
  6. Step 6: Final answer
    x = 110,819,025.60

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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.