Home / 356,491.28-534,731.18-86,621.55

Finding the Fourth Proportional to 356,491.28, 534,731.18 and 86,621.55

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Solution

The fourth proportional to 356,491.28, 534,731.18 and 86,621.55 is: 129,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,491.28 : 534,731.18 = 86,621.55 : x
  2. Step 2: Convert to fraction form
    356,491.28/534,731.18 = 86,621.55/x
  3. Step 3: Cross multiply
    356,491.28x = 534,731.18 × 86,621.55
  4. Step 4: Simplify right side
    356,491.28x = 46,319,245,541.89
  5. Step 5: Solve for x
    x = 46,319,245,541.89/356,491.28
  6. Step 6: Final answer
    x = 129,930.94

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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.