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Finding the Fourth Proportional to 14,710.80, 20,311.47 and 9,053.16

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Solution

The fourth proportional to 14,710.80, 20,311.47 and 9,053.16 is: 12,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,710.80 : 20,311.47 = 9,053.16 : x
  2. Step 2: Convert to fraction form
    14,710.80/20,311.47 = 9,053.16/x
  3. Step 3: Cross multiply
    14,710.80x = 20,311.47 × 9,053.16
  4. Step 4: Simplify right side
    14,710.80x = 183,882,987.75
  5. Step 5: Solve for x
    x = 183,882,987.75/14,710.80
  6. Step 6: Final answer
    x = 12,499.86

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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.