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Finding the Fourth Proportional to 65,687.36, 98,531.04 and 39,359.12

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Solution

The fourth proportional to 65,687.36, 98,531.04 and 39,359.12 is: 59,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,687.36 : 98,531.04 = 39,359.12 : x
  2. Step 2: Convert to fraction form
    65,687.36/98,531.04 = 39,359.12/x
  3. Step 3: Cross multiply
    65,687.36x = 98,531.04 × 39,359.12
  4. Step 4: Simplify right side
    65,687.36x = 3,878,095,027.08
  5. Step 5: Solve for x
    x = 3,878,095,027.08/65,687.36
  6. Step 6: Final answer
    x = 59,038.68

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.