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Finding the Fourth Proportional to 86,532.86, 129,035.47 and 83,449.14

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Solution

The fourth proportional to 86,532.86, 129,035.47 and 83,449.14 is: 124,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,532.86 : 129,035.47 = 83,449.14 : x
  2. Step 2: Convert to fraction form
    86,532.86/129,035.47 = 83,449.14/x
  3. Step 3: Cross multiply
    86,532.86x = 129,035.47 × 83,449.14
  4. Step 4: Simplify right side
    86,532.86x = 10,767,898,583.75
  5. Step 5: Solve for x
    x = 10,767,898,583.75/86,532.86
  6. Step 6: Final answer
    x = 124,437.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.