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Finding the Fourth Proportional to 125,213,005.20, 187,819,507.80 and 125,213,005.20

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Solution

The fourth proportional to 125,213,005.20, 187,819,507.80 and 125,213,005.20 is: 187,819,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213,005.20 : 187,819,507.80 = 125,213,005.20 : x
  2. Step 2: Convert to fraction form
    125,213,005.20/187,819,507.80 = 125,213,005.20/x
  3. Step 3: Cross multiply
    125,213,005.20x = 187,819,507.80 × 125,213,005.20
  4. Step 4: Simplify right side
    125,213,005.20x = 23,517,445,006,822,844
  5. Step 5: Solve for x
    x = 23,517,445,006,822,844/125,213,005.20
  6. Step 6: Final answer
    x = 187,819,507.80

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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.