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Finding the Fourth Proportional to 65,807.20, 98,710.80 and 61,400.80

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Solution

The fourth proportional to 65,807.20, 98,710.80 and 61,400.80 is: 92,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,807.20 : 98,710.80 = 61,400.80 : x
  2. Step 2: Convert to fraction form
    65,807.20/98,710.80 = 61,400.80/x
  3. Step 3: Cross multiply
    65,807.20x = 98,710.80 × 61,400.80
  4. Step 4: Simplify right side
    65,807.20x = 6,060,922,088.64
  5. Step 5: Solve for x
    x = 6,060,922,088.64/65,807.20
  6. Step 6: Final answer
    x = 92,101.20

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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.