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Finding the Fourth Proportional to 261,335.70, 392,003.55 and 168,023.70

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Solution

The fourth proportional to 261,335.70, 392,003.55 and 168,023.70 is: 252,035.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,335.70 : 392,003.55 = 168,023.70 : x
  2. Step 2: Convert to fraction form
    261,335.70/392,003.55 = 168,023.70/x
  3. Step 3: Cross multiply
    261,335.70x = 392,003.55 × 168,023.70
  4. Step 4: Simplify right side
    261,335.70x = 65,865,886,884.14
  5. Step 5: Solve for x
    x = 65,865,886,884.14/261,335.70
  6. Step 6: Final answer
    x = 252,035.55

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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.