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Finding the Fourth Proportional to 264,612.96, 396,925.92 and 77,630.40

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Solution

The fourth proportional to 264,612.96, 396,925.92 and 77,630.40 is: 116,447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,612.96 : 396,925.92 = 77,630.40 : x
  2. Step 2: Convert to fraction form
    264,612.96/396,925.92 = 77,630.40/x
  3. Step 3: Cross multiply
    264,612.96x = 396,925.92 × 77,630.40
  4. Step 4: Simplify right side
    264,612.96x = 30,813,517,939.97
  5. Step 5: Solve for x
    x = 30,813,517,939.97/264,612.96
  6. Step 6: Final answer
    x = 116,447.50

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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.