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Finding the Fourth Proportional to 668,754.80, 922,703.10 and 396,596.42

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Solution

The fourth proportional to 668,754.80, 922,703.10 and 396,596.42 is: 547,197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,754.80 : 922,703.10 = 396,596.42 : x
  2. Step 2: Convert to fraction form
    668,754.80/922,703.10 = 396,596.42/x
  3. Step 3: Cross multiply
    668,754.80x = 922,703.10 × 396,596.42
  4. Step 4: Simplify right side
    668,754.80x = 365,940,746,182.90
  5. Step 5: Solve for x
    x = 365,940,746,182.90/668,754.80
  6. Step 6: Final answer
    x = 547,197.19

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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.