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Finding the Fourth Proportional to 125,048.56, 172,580.88 and 71,346.84

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Solution

The fourth proportional to 125,048.56, 172,580.88 and 71,346.84 is: 98,466.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,048.56 : 172,580.88 = 71,346.84 : x
  2. Step 2: Convert to fraction form
    125,048.56/172,580.88 = 71,346.84/x
  3. Step 3: Cross multiply
    125,048.56x = 172,580.88 × 71,346.84
  4. Step 4: Simplify right side
    125,048.56x = 12,313,100,432.42
  5. Step 5: Solve for x
    x = 12,313,100,432.42/125,048.56
  6. Step 6: Final answer
    x = 98,466.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.