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Finding the Fourth Proportional to 398,802.80, 596,746.20 and 293,826.80

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Solution

The fourth proportional to 398,802.80, 596,746.20 and 293,826.80 is: 439,665.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,802.80 : 596,746.20 = 293,826.80 : x
  2. Step 2: Convert to fraction form
    398,802.80/596,746.20 = 293,826.80/x
  3. Step 3: Cross multiply
    398,802.80x = 596,746.20 × 293,826.80
  4. Step 4: Simplify right side
    398,802.80x = 175,340,026,358.16
  5. Step 5: Solve for x
    x = 175,340,026,358.16/398,802.80
  6. Step 6: Final answer
    x = 439,665.99

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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.