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Finding the Fourth Proportional to 104,639.70, 156,959.55 and 52,151.70

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Solution

The fourth proportional to 104,639.70, 156,959.55 and 52,151.70 is: 78,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,639.70 : 156,959.55 = 52,151.70 : x
  2. Step 2: Convert to fraction form
    104,639.70/156,959.55 = 52,151.70/x
  3. Step 3: Cross multiply
    104,639.70x = 156,959.55 × 52,151.70
  4. Step 4: Simplify right side
    104,639.70x = 8,185,707,363.74
  5. Step 5: Solve for x
    x = 8,185,707,363.74/104,639.70
  6. Step 6: Final answer
    x = 78,227.55

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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.