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Finding the Fourth Proportional to 586,441.90, 878,626.05 and 520,086.70

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Solution

The fourth proportional to 586,441.90, 878,626.05 and 520,086.70 is: 779,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,441.90 : 878,626.05 = 520,086.70 : x
  2. Step 2: Convert to fraction form
    586,441.90/878,626.05 = 520,086.70/x
  3. Step 3: Cross multiply
    586,441.90x = 878,626.05 × 520,086.70
  4. Step 4: Simplify right side
    586,441.90x = 456,961,722,878.54
  5. Step 5: Solve for x
    x = 456,961,722,878.54/586,441.90
  6. Step 6: Final answer
    x = 779,210.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.