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Finding the Fourth Proportional to 125,428,648.80, 188,142,973.20 and 125,428,648.80

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Solution

The fourth proportional to 125,428,648.80, 188,142,973.20 and 125,428,648.80 is: 188,142,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,428,648.80 : 188,142,973.20 = 125,428,648.80 : x
  2. Step 2: Convert to fraction form
    125,428,648.80/188,142,973.20 = 125,428,648.80/x
  3. Step 3: Cross multiply
    125,428,648.80x = 188,142,973.20 × 125,428,648.80
  4. Step 4: Simplify right side
    125,428,648.80x = 23,598,518,909,690,612
  5. Step 5: Solve for x
    x = 23,598,518,909,690,612/125,428,648.80
  6. Step 6: Final answer
    x = 188,142,973.20

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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.