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Finding the Fourth Proportional to 117,424,808.80, 176,137,213.20 and 86,813,807.20

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Solution

The fourth proportional to 117,424,808.80, 176,137,213.20 and 86,813,807.20 is: 130,220,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,424,808.80 : 176,137,213.20 = 86,813,807.20 : x
  2. Step 2: Convert to fraction form
    117,424,808.80/176,137,213.20 = 86,813,807.20/x
  3. Step 3: Cross multiply
    117,424,808.80x = 176,137,213.20 × 86,813,807.20
  4. Step 4: Simplify right side
    117,424,808.80x = 15,291,142,067,490,094
  5. Step 5: Solve for x
    x = 15,291,142,067,490,094/117,424,808.80
  6. Step 6: Final answer
    x = 130,220,710.80

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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.