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Finding the Fourth Proportional to 73,877.68, 111,315.21 and 61,018.12

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Solution

The fourth proportional to 73,877.68, 111,315.21 and 61,018.12 is: 91,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,877.68 : 111,315.21 = 61,018.12 : x
  2. Step 2: Convert to fraction form
    73,877.68/111,315.21 = 61,018.12/x
  3. Step 3: Cross multiply
    73,877.68x = 111,315.21 × 61,018.12
  4. Step 4: Simplify right side
    73,877.68x = 6,792,244,841.61
  5. Step 5: Solve for x
    x = 6,792,244,841.61/73,877.68
  6. Step 6: Final answer
    x = 91,939.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.