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Finding the Fourth Proportional to 369,856.80, 554,461.20 and 251,143.20

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Solution

The fourth proportional to 369,856.80, 554,461.20 and 251,143.20 is: 376,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,856.80 : 554,461.20 = 251,143.20 : x
  2. Step 2: Convert to fraction form
    369,856.80/554,461.20 = 251,143.20/x
  3. Step 3: Cross multiply
    369,856.80x = 554,461.20 × 251,143.20
  4. Step 4: Simplify right side
    369,856.80x = 139,249,160,043.84
  5. Step 5: Solve for x
    x = 139,249,160,043.84/369,856.80
  6. Step 6: Final answer
    x = 376,494.79

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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.