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Finding the Fourth Proportional to 14,828.61, 20,463.83 and 8,859.18

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Solution

The fourth proportional to 14,828.61, 20,463.83 and 8,859.18 is: 12,225.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,828.61 : 20,463.83 = 8,859.18 : x
  2. Step 2: Convert to fraction form
    14,828.61/20,463.83 = 8,859.18/x
  3. Step 3: Cross multiply
    14,828.61x = 20,463.83 × 8,859.18
  4. Step 4: Simplify right side
    14,828.61x = 181,292,753.46
  5. Step 5: Solve for x
    x = 181,292,753.46/14,828.61
  6. Step 6: Final answer
    x = 12,225.88

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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.