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Finding the Fourth Proportional to 61,115.81, 84,344.69 and 35,970.17

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Solution

The fourth proportional to 61,115.81, 84,344.69 and 35,970.17 is: 49,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.81 : 84,344.69 = 35,970.17 : x
  2. Step 2: Convert to fraction form
    61,115.81/84,344.69 = 35,970.17/x
  3. Step 3: Cross multiply
    61,115.81x = 84,344.69 × 35,970.17
  4. Step 4: Simplify right side
    61,115.81x = 3,033,892,868.91
  5. Step 5: Solve for x
    x = 3,033,892,868.91/61,115.81
  6. Step 6: Final answer
    x = 49,641.70

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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.