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Finding the Fourth Proportional to 590,639.60, 885,959.40 and 585,390.80

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Solution

The fourth proportional to 590,639.60, 885,959.40 and 585,390.80 is: 878,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,639.60 : 885,959.40 = 585,390.80 : x
  2. Step 2: Convert to fraction form
    590,639.60/885,959.40 = 585,390.80/x
  3. Step 3: Cross multiply
    590,639.60x = 885,959.40 × 585,390.80
  4. Step 4: Simplify right side
    590,639.60x = 518,632,481,933.52
  5. Step 5: Solve for x
    x = 518,632,481,933.52/590,639.60
  6. Step 6: Final answer
    x = 878,086.20

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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.