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Finding the Fourth Proportional to 677,624.85, 935,151.62 and 405,640.11

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Solution

The fourth proportional to 677,624.85, 935,151.62 and 405,640.11 is: 559,800.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,624.85 : 935,151.62 = 405,640.11 : x
  2. Step 2: Convert to fraction form
    677,624.85/935,151.62 = 405,640.11/x
  3. Step 3: Cross multiply
    677,624.85x = 935,151.62 × 405,640.11
  4. Step 4: Simplify right side
    677,624.85x = 379,335,007,482.10
  5. Step 5: Solve for x
    x = 379,335,007,482.10/677,624.85
  6. Step 6: Final answer
    x = 559,800.91

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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.