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Finding the Fourth Proportional to 80,742,732.20, 121,114,098.30 and 80,742,732.20

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Solution

The fourth proportional to 80,742,732.20, 121,114,098.30 and 80,742,732.20 is: 121,114,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,742,732.20 : 121,114,098.30 = 80,742,732.20 : x
  2. Step 2: Convert to fraction form
    80,742,732.20/121,114,098.30 = 80,742,732.20/x
  3. Step 3: Cross multiply
    80,742,732.20x = 121,114,098.30 × 80,742,732.20
  4. Step 4: Simplify right side
    80,742,732.20x = 9,779,083,204,681,376
  5. Step 5: Solve for x
    x = 9,779,083,204,681,376/80,742,732.20
  6. Step 6: Final answer
    x = 121,114,098.30

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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.