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Finding the Fourth Proportional to 71,551.76, 98,723.88 and 42,876.08

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Solution

The fourth proportional to 71,551.76, 98,723.88 and 42,876.08 is: 59,158.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.76 : 98,723.88 = 42,876.08 : x
  2. Step 2: Convert to fraction form
    71,551.76/98,723.88 = 42,876.08/x
  3. Step 3: Cross multiply
    71,551.76x = 98,723.88 × 42,876.08
  4. Step 4: Simplify right side
    71,551.76x = 4,232,892,976.79
  5. Step 5: Solve for x
    x = 4,232,892,976.79/71,551.76
  6. Step 6: Final answer
    x = 59,158.47

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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.