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Finding the Fourth Proportional to 9,060.81, 12,503.55 and 5,082

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Solution

The fourth proportional to 9,060.81, 12,503.55 and 5,082 is: 7,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,060.81 : 12,503.55 = 5,082 : x
  2. Step 2: Convert to fraction form
    9,060.81/12,503.55 = 5,082/x
  3. Step 3: Cross multiply
    9,060.81x = 12,503.55 × 5,082
  4. Step 4: Simplify right side
    9,060.81x = 63,543,041.10
  5. Step 5: Solve for x
    x = 63,543,041.10/9,060.81
  6. Step 6: Final answer
    x = 7,012.95

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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.