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Finding the Fourth Proportional to 10,670.92, 14,711.54 and 7,479.92

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Solution

The fourth proportional to 10,670.92, 14,711.54 and 7,479.92 is: 10,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,670.92 : 14,711.54 = 7,479.92 : x
  2. Step 2: Convert to fraction form
    10,670.92/14,711.54 = 7,479.92/x
  3. Step 3: Cross multiply
    10,670.92x = 14,711.54 × 7,479.92
  4. Step 4: Simplify right side
    10,670.92x = 110,041,142.28
  5. Step 5: Solve for x
    x = 110,041,142.28/10,670.92
  6. Step 6: Final answer
    x = 10,312.25

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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.