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Finding the Fourth Proportional to 668,752.80, 922,700.34 and 396,594.42

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Solution

The fourth proportional to 668,752.80, 922,700.34 and 396,594.42 is: 547,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,752.80 : 922,700.34 = 396,594.42 : x
  2. Step 2: Convert to fraction form
    668,752.80/922,700.34 = 396,594.42/x
  3. Step 3: Cross multiply
    668,752.80x = 922,700.34 × 396,594.42
  4. Step 4: Simplify right side
    668,752.80x = 365,937,806,176.10
  5. Step 5: Solve for x
    x = 365,937,806,176.10/668,752.80
  6. Step 6: Final answer
    x = 547,194.43

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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.