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Finding the Fourth Proportional to 79,672,002.60, 119,508,003.90 and 79,168,117.80

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Solution

The fourth proportional to 79,672,002.60, 119,508,003.90 and 79,168,117.80 is: 118,752,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,672,002.60 : 119,508,003.90 = 79,168,117.80 : x
  2. Step 2: Convert to fraction form
    79,672,002.60/119,508,003.90 = 79,168,117.80/x
  3. Step 3: Cross multiply
    79,672,002.60x = 119,508,003.90 × 79,168,117.80
  4. Step 4: Simplify right side
    79,672,002.60x = 9,461,223,730,798,060
  5. Step 5: Solve for x
    x = 9,461,223,730,798,060/79,672,002.60
  6. Step 6: Final answer
    x = 118,752,176.70

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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.