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Finding the Fourth Proportional to 7,065.84, 9,755.28 and 4,549.20

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Solution

The fourth proportional to 7,065.84, 9,755.28 and 4,549.20 is: 6,280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.84 : 9,755.28 = 4,549.20 : x
  2. Step 2: Convert to fraction form
    7,065.84/9,755.28 = 4,549.20/x
  3. Step 3: Cross multiply
    7,065.84x = 9,755.28 × 4,549.20
  4. Step 4: Simplify right side
    7,065.84x = 44,378,719.78
  5. Step 5: Solve for x
    x = 44,378,719.78/7,065.84
  6. Step 6: Final answer
    x = 6,280.74

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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.