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Finding the Fourth Proportional to 7,258.80, 10,888.20 and 4,753.20

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Solution

The fourth proportional to 7,258.80, 10,888.20 and 4,753.20 is: 7,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,258.80 : 10,888.20 = 4,753.20 : x
  2. Step 2: Convert to fraction form
    7,258.80/10,888.20 = 4,753.20/x
  3. Step 3: Cross multiply
    7,258.80x = 10,888.20 × 4,753.20
  4. Step 4: Simplify right side
    7,258.80x = 51,753,792.24
  5. Step 5: Solve for x
    x = 51,753,792.24/7,258.80
  6. Step 6: Final answer
    x = 7,129.80

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1.5x scale

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.