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Finding the Fourth Proportional to 18,412.76, 25,407.86 and 10,454.52

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Solution

The fourth proportional to 18,412.76, 25,407.86 and 10,454.52 is: 14,426.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.76 : 25,407.86 = 10,454.52 : x
  2. Step 2: Convert to fraction form
    18,412.76/25,407.86 = 10,454.52/x
  3. Step 3: Cross multiply
    18,412.76x = 25,407.86 × 10,454.52
  4. Step 4: Simplify right side
    18,412.76x = 265,626,980.53
  5. Step 5: Solve for x
    x = 265,626,980.53/18,412.76
  6. Step 6: Final answer
    x = 14,426.24

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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.