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Finding the Fourth Proportional to 65,710.20, 98,589.60 and 63,280.20

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Solution

The fourth proportional to 65,710.20, 98,589.60 and 63,280.20 is: 94,943.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,710.20 : 98,589.60 = 63,280.20 : x
  2. Step 2: Convert to fraction form
    65,710.20/98,589.60 = 63,280.20/x
  3. Step 3: Cross multiply
    65,710.20x = 98,589.60 × 63,280.20
  4. Step 4: Simplify right side
    65,710.20x = 6,238,769,605.92
  5. Step 5: Solve for x
    x = 6,238,769,605.92/65,710.20
  6. Step 6: Final answer
    x = 94,943.70

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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.