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Finding the Fourth Proportional to 439,639.17, 606,509.43 and 258,269.28

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Solution

The fourth proportional to 439,639.17, 606,509.43 and 258,269.28 is: 356,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,639.17 : 606,509.43 = 258,269.28 : x
  2. Step 2: Convert to fraction form
    439,639.17/606,509.43 = 258,269.28/x
  3. Step 3: Cross multiply
    439,639.17x = 606,509.43 × 258,269.28
  4. Step 4: Simplify right side
    439,639.17x = 156,642,753,799.31
  5. Step 5: Solve for x
    x = 156,642,753,799.31/439,639.17
  6. Step 6: Final answer
    x = 356,298.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.