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Finding the Fourth Proportional to 65,934.40, 99,047.28 and 39,654.40

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Solution

The fourth proportional to 65,934.40, 99,047.28 and 39,654.40 is: 59,569.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,934.40 : 99,047.28 = 39,654.40 : x
  2. Step 2: Convert to fraction form
    65,934.40/99,047.28 = 39,654.40/x
  3. Step 3: Cross multiply
    65,934.40x = 99,047.28 × 39,654.40
  4. Step 4: Simplify right side
    65,934.40x = 3,927,660,460.03
  5. Step 5: Solve for x
    x = 3,927,660,460.03/65,934.40
  6. Step 6: Final answer
    x = 59,569.22

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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.