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Finding the Fourth Proportional to 79,781,658.60, 119,672,487.90 and 79,781,658.60

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Solution

The fourth proportional to 79,781,658.60, 119,672,487.90 and 79,781,658.60 is: 119,672,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781,658.60 : 119,672,487.90 = 79,781,658.60 : x
  2. Step 2: Convert to fraction form
    79,781,658.60/119,672,487.90 = 79,781,658.60/x
  3. Step 3: Cross multiply
    79,781,658.60x = 119,672,487.90 × 79,781,658.60
  4. Step 4: Simplify right side
    79,781,658.60x = 9,547,669,573,450,430
  5. Step 5: Solve for x
    x = 9,547,669,573,450,430/79,781,658.60
  6. Step 6: Final answer
    x = 119,672,487.90

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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.