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Finding the Fourth Proportional to 698,432.16, 963,843.12 and 396,628.32

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Solution

The fourth proportional to 698,432.16, 963,843.12 and 396,628.32 is: 547,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,432.16 : 963,843.12 = 396,628.32 : x
  2. Step 2: Convert to fraction form
    698,432.16/963,843.12 = 396,628.32/x
  3. Step 3: Cross multiply
    698,432.16x = 963,843.12 × 396,628.32
  4. Step 4: Simplify right side
    698,432.16x = 382,287,477,429.16
  5. Step 5: Solve for x
    x = 382,287,477,429.16/698,432.16
  6. Step 6: Final answer
    x = 547,350.91

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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.