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Finding the Fourth Proportional to 65,728.80, 98,593.20 and 63,104.40

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Solution

The fourth proportional to 65,728.80, 98,593.20 and 63,104.40 is: 94,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,728.80 : 98,593.20 = 63,104.40 : x
  2. Step 2: Convert to fraction form
    65,728.80/98,593.20 = 63,104.40/x
  3. Step 3: Cross multiply
    65,728.80x = 98,593.20 × 63,104.40
  4. Step 4: Simplify right side
    65,728.80x = 6,221,664,730.08
  5. Step 5: Solve for x
    x = 6,221,664,730.08/65,728.80
  6. Step 6: Final answer
    x = 94,656.60

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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.