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Finding the Fourth Proportional to 61,491.05, 84,878.87 and 36,005.61

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Solution

The fourth proportional to 61,491.05, 84,878.87 and 36,005.61 is: 49,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,491.05 : 84,878.87 = 36,005.61 : x
  2. Step 2: Convert to fraction form
    61,491.05/84,878.87 = 36,005.61/x
  3. Step 3: Cross multiply
    61,491.05x = 84,878.87 × 36,005.61
  4. Step 4: Simplify right side
    61,491.05x = 3,056,115,983.16
  5. Step 5: Solve for x
    x = 3,056,115,983.16/61,491.05
  6. Step 6: Final answer
    x = 49,700.18

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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.