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Finding the Fourth Proportional to 71,416.61, 98,558.03 and 39,585.53

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Solution

The fourth proportional to 71,416.61, 98,558.03 and 39,585.53 is: 54,629.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,416.61 : 98,558.03 = 39,585.53 : x
  2. Step 2: Convert to fraction form
    71,416.61/98,558.03 = 39,585.53/x
  3. Step 3: Cross multiply
    71,416.61x = 98,558.03 × 39,585.53
  4. Step 4: Simplify right side
    71,416.61x = 3,901,471,853.31
  5. Step 5: Solve for x
    x = 3,901,471,853.31/71,416.61
  6. Step 6: Final answer
    x = 54,629.75

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1.5x scale

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.