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Finding the Fourth Proportional to 668,753.80, 922,701.72 and 396,595.42

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Solution

The fourth proportional to 668,753.80, 922,701.72 and 396,595.42 is: 547,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,753.80 : 922,701.72 = 396,595.42 : x
  2. Step 2: Convert to fraction form
    668,753.80/922,701.72 = 396,595.42/x
  3. Step 3: Cross multiply
    668,753.80x = 922,701.72 × 396,595.42
  4. Step 4: Simplify right side
    668,753.80x = 365,939,276,178.12
  5. Step 5: Solve for x
    x = 365,939,276,178.12/668,753.80
  6. Step 6: Final answer
    x = 547,195.81

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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.