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Finding the Fourth Proportional to 14,875.88, 20,508.18 and 14,415.80

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Solution

The fourth proportional to 14,875.88, 20,508.18 and 14,415.80 is: 19,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,875.88 : 20,508.18 = 14,415.80 : x
  2. Step 2: Convert to fraction form
    14,875.88/20,508.18 = 14,415.80/x
  3. Step 3: Cross multiply
    14,875.88x = 20,508.18 × 14,415.80
  4. Step 4: Simplify right side
    14,875.88x = 295,641,821.24
  5. Step 5: Solve for x
    x = 295,641,821.24/14,875.88
  6. Step 6: Final answer
    x = 19,873.90

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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.