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Finding the Fourth Proportional to 9,479.76, 13,077.92 and 5,700.74

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Solution

The fourth proportional to 9,479.76, 13,077.92 and 5,700.74 is: 7,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.76 : 13,077.92 = 5,700.74 : x
  2. Step 2: Convert to fraction form
    9,479.76/13,077.92 = 5,700.74/x
  3. Step 3: Cross multiply
    9,479.76x = 13,077.92 × 5,700.74
  4. Step 4: Simplify right side
    9,479.76x = 74,553,821.66
  5. Step 5: Solve for x
    x = 74,553,821.66/9,479.76
  6. Step 6: Final answer
    x = 7,864.53

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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.