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Finding the Fourth Proportional to 113,875.70, 170,813.55 and 61,387.70

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Solution

The fourth proportional to 113,875.70, 170,813.55 and 61,387.70 is: 92,081.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,875.70 : 170,813.55 = 61,387.70 : x
  2. Step 2: Convert to fraction form
    113,875.70/170,813.55 = 61,387.70/x
  3. Step 3: Cross multiply
    113,875.70x = 170,813.55 × 61,387.70
  4. Step 4: Simplify right side
    113,875.70x = 10,485,850,963.34
  5. Step 5: Solve for x
    x = 10,485,850,963.34/113,875.70
  6. Step 6: Final answer
    x = 92,081.55

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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.