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Finding the Fourth Proportional to 77,328.79, 106,765.13 and 59,391.74

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Solution

The fourth proportional to 77,328.79, 106,765.13 and 59,391.74 is: 82,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,328.79 : 106,765.13 = 59,391.74 : x
  2. Step 2: Convert to fraction form
    77,328.79/106,765.13 = 59,391.74/x
  3. Step 3: Cross multiply
    77,328.79x = 106,765.13 × 59,391.74
  4. Step 4: Simplify right side
    77,328.79x = 6,340,967,257.42
  5. Step 5: Solve for x
    x = 6,340,967,257.42/77,328.79
  6. Step 6: Final answer
    x = 82,000.09

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1.5x scale

Why These Related Problems?

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