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Finding the Fourth Proportional to 90,525.66, 124,981.76 and 84,877.13

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Solution

The fourth proportional to 90,525.66, 124,981.76 and 84,877.13 is: 117,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,525.66 : 124,981.76 = 84,877.13 : x
  2. Step 2: Convert to fraction form
    90,525.66/124,981.76 = 84,877.13/x
  3. Step 3: Cross multiply
    90,525.66x = 124,981.76 × 84,877.13
  4. Step 4: Simplify right side
    90,525.66x = 10,608,092,678.43
  5. Step 5: Solve for x
    x = 10,608,092,678.43/90,525.66
  6. Step 6: Final answer
    x = 117,183.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.