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Finding the Fourth Proportional to 61,034.40, 91,705.20 and 38,858.40

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Solution

The fourth proportional to 61,034.40, 91,705.20 and 38,858.40 is: 58,385.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,034.40 : 91,705.20 = 38,858.40 : x
  2. Step 2: Convert to fraction form
    61,034.40/91,705.20 = 38,858.40/x
  3. Step 3: Cross multiply
    61,034.40x = 91,705.20 × 38,858.40
  4. Step 4: Simplify right side
    61,034.40x = 3,563,517,343.68
  5. Step 5: Solve for x
    x = 3,563,517,343.68/61,034.40
  6. Step 6: Final answer
    x = 58,385.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.