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Finding the Fourth Proportional to 14,593.86, 20,139.50 and 8,307.46

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Solution

The fourth proportional to 14,593.86, 20,139.50 and 8,307.46 is: 11,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,593.86 : 20,139.50 = 8,307.46 : x
  2. Step 2: Convert to fraction form
    14,593.86/20,139.50 = 8,307.46/x
  3. Step 3: Cross multiply
    14,593.86x = 20,139.50 × 8,307.46
  4. Step 4: Simplify right side
    14,593.86x = 167,308,090.67
  5. Step 5: Solve for x
    x = 167,308,090.67/14,593.86
  6. Step 6: Final answer
    x = 11,464.28

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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.