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Finding the Fourth Proportional to 9,041.15, 12,479.03 and 5,457.20

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Solution

The fourth proportional to 9,041.15, 12,479.03 and 5,457.20 is: 7,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,041.15 : 12,479.03 = 5,457.20 : x
  2. Step 2: Convert to fraction form
    9,041.15/12,479.03 = 5,457.20/x
  3. Step 3: Cross multiply
    9,041.15x = 12,479.03 × 5,457.20
  4. Step 4: Simplify right side
    9,041.15x = 68,100,472.83
  5. Step 5: Solve for x
    x = 68,100,472.83/9,041.15
  6. Step 6: Final answer
    x = 7,532.28

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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.