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Finding the Fourth Proportional to 66,020.52, 91,017.18 and 63,952.68

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Solution

The fourth proportional to 66,020.52, 91,017.18 and 63,952.68 is: 88,166.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.52 : 91,017.18 = 63,952.68 : x
  2. Step 2: Convert to fraction form
    66,020.52/91,017.18 = 63,952.68/x
  3. Step 3: Cross multiply
    66,020.52x = 91,017.18 × 63,952.68
  4. Step 4: Simplify right side
    66,020.52x = 5,820,792,587.04
  5. Step 5: Solve for x
    x = 5,820,792,587.04/66,020.52
  6. Step 6: Final answer
    x = 88,166.42

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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.