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Finding the Fourth Proportional to 109,225.70, 163,838.55 and 74,233.70

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Solution

The fourth proportional to 109,225.70, 163,838.55 and 74,233.70 is: 111,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,225.70 : 163,838.55 = 74,233.70 : x
  2. Step 2: Convert to fraction form
    109,225.70/163,838.55 = 74,233.70/x
  3. Step 3: Cross multiply
    109,225.70x = 163,838.55 × 74,233.70
  4. Step 4: Simplify right side
    109,225.70x = 12,162,341,769.14
  5. Step 5: Solve for x
    x = 12,162,341,769.14/109,225.70
  6. Step 6: Final answer
    x = 111,350.55

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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.