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Finding the Fourth Proportional to 14,967.20, 22,407.60 and 13,239.20

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Solution

The fourth proportional to 14,967.20, 22,407.60 and 13,239.20 is: 19,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.20 : 22,407.60 = 13,239.20 : x
  2. Step 2: Convert to fraction form
    14,967.20/22,407.60 = 13,239.20/x
  3. Step 3: Cross multiply
    14,967.20x = 22,407.60 × 13,239.20
  4. Step 4: Simplify right side
    14,967.20x = 296,658,697.92
  5. Step 5: Solve for x
    x = 296,658,697.92/14,967.20
  6. Step 6: Final answer
    x = 19,820.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.