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Finding the Fourth Proportional to 705,981.80, 974,262.42 and 383,691.92

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Solution

The fourth proportional to 705,981.80, 974,262.42 and 383,691.92 is: 529,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,981.80 : 974,262.42 = 383,691.92 : x
  2. Step 2: Convert to fraction form
    705,981.80/974,262.42 = 383,691.92/x
  3. Step 3: Cross multiply
    705,981.80x = 974,262.42 × 383,691.92
  4. Step 4: Simplify right side
    705,981.80x = 373,816,618,513.65
  5. Step 5: Solve for x
    x = 373,816,618,513.65/705,981.80
  6. Step 6: Final answer
    x = 529,498.95

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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.