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Finding the Fourth Proportional to 71,641.68, 98,836.65 and 43,298.16

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Solution

The fourth proportional to 71,641.68, 98,836.65 and 43,298.16 is: 59,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,641.68 : 98,836.65 = 43,298.16 : x
  2. Step 2: Convert to fraction form
    71,641.68/98,836.65 = 43,298.16/x
  3. Step 3: Cross multiply
    71,641.68x = 98,836.65 × 43,298.16
  4. Step 4: Simplify right side
    71,641.68x = 4,279,445,085.56
  5. Step 5: Solve for x
    x = 4,279,445,085.56/71,641.68
  6. Step 6: Final answer
    x = 59,734.01

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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.