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Finding the Fourth Proportional to 86,561.49, 129,500.61 and 65,562.03

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Solution

The fourth proportional to 86,561.49, 129,500.61 and 65,562.03 is: 98,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,561.49 : 129,500.61 = 65,562.03 : x
  2. Step 2: Convert to fraction form
    86,561.49/129,500.61 = 65,562.03/x
  3. Step 3: Cross multiply
    86,561.49x = 129,500.61 × 65,562.03
  4. Step 4: Simplify right side
    86,561.49x = 8,490,322,877.84
  5. Step 5: Solve for x
    x = 8,490,322,877.84/86,561.49
  6. Step 6: Final answer
    x = 98,084.30

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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.