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Finding the Fourth Proportional to 14,973.57, 20,663.42 and 8,259.21

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Solution

The fourth proportional to 14,973.57, 20,663.42 and 8,259.21 is: 11,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,973.57 : 20,663.42 = 8,259.21 : x
  2. Step 2: Convert to fraction form
    14,973.57/20,663.42 = 8,259.21/x
  3. Step 3: Cross multiply
    14,973.57x = 20,663.42 × 8,259.21
  4. Step 4: Simplify right side
    14,973.57x = 170,663,483.80
  5. Step 5: Solve for x
    x = 170,663,483.80/14,973.57
  6. Step 6: Final answer
    x = 11,397.65

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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.