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Finding the Fourth Proportional to 125,638.10, 176,359.90 and 125,638.10

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Solution

The fourth proportional to 125,638.10, 176,359.90 and 125,638.10 is: 176,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,638.10 : 176,359.90 = 125,638.10 : x
  2. Step 2: Convert to fraction form
    125,638.10/176,359.90 = 125,638.10/x
  3. Step 3: Cross multiply
    125,638.10x = 176,359.90 × 125,638.10
  4. Step 4: Simplify right side
    125,638.10x = 22,157,522,752.19
  5. Step 5: Solve for x
    x = 22,157,522,752.19/125,638.10
  6. Step 6: Final answer
    x = 176,359.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.