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Finding the Fourth Proportional to 7,232.76, 9,979.20 and 4,088.88

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Solution

The fourth proportional to 7,232.76, 9,979.20 and 4,088.88 is: 5,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,232.76 : 9,979.20 = 4,088.88 : x
  2. Step 2: Convert to fraction form
    7,232.76/9,979.20 = 4,088.88/x
  3. Step 3: Cross multiply
    7,232.76x = 9,979.20 × 4,088.88
  4. Step 4: Simplify right side
    7,232.76x = 40,803,751.30
  5. Step 5: Solve for x
    x = 40,803,751.30/7,232.76
  6. Step 6: Final answer
    x = 5,641.52

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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.