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Finding the Fourth Proportional to 586,811.20, 880,216.80 and 376,859.20

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Solution

The fourth proportional to 586,811.20, 880,216.80 and 376,859.20 is: 565,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,811.20 : 880,216.80 = 376,859.20 : x
  2. Step 2: Convert to fraction form
    586,811.20/880,216.80 = 376,859.20/x
  3. Step 3: Cross multiply
    586,811.20x = 880,216.80 × 376,859.20
  4. Step 4: Simplify right side
    586,811.20x = 331,717,799,074.56
  5. Step 5: Solve for x
    x = 331,717,799,074.56/586,811.20
  6. Step 6: Final answer
    x = 565,288.80

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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.