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Finding the Fourth Proportional to 20,798.60, 31,133.10 and 14,966.60

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Solution

The fourth proportional to 20,798.60, 31,133.10 and 14,966.60 is: 22,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.60 : 31,133.10 = 14,966.60 : x
  2. Step 2: Convert to fraction form
    20,798.60/31,133.10 = 14,966.60/x
  3. Step 3: Cross multiply
    20,798.60x = 31,133.10 × 14,966.60
  4. Step 4: Simplify right side
    20,798.60x = 465,956,654.46
  5. Step 5: Solve for x
    x = 465,956,654.46/20,798.60
  6. Step 6: Final answer
    x = 22,403.27

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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.