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Finding the Fourth Proportional to 391,168.92, 539,355.90 and 362,825.40

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Solution

The fourth proportional to 391,168.92, 539,355.90 and 362,825.40 is: 500,274.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,168.92 : 539,355.90 = 362,825.40 : x
  2. Step 2: Convert to fraction form
    391,168.92/539,355.90 = 362,825.40/x
  3. Step 3: Cross multiply
    391,168.92x = 539,355.90 × 362,825.40
  4. Step 4: Simplify right side
    391,168.92x = 195,692,020,159.86
  5. Step 5: Solve for x
    x = 195,692,020,159.86/391,168.92
  6. Step 6: Final answer
    x = 500,274.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.