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Finding the Fourth Proportional to 74,248.35, 111,370.65 and 21,658.29

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Solution

The fourth proportional to 74,248.35, 111,370.65 and 21,658.29 is: 32,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,248.35 : 111,370.65 = 21,658.29 : x
  2. Step 2: Convert to fraction form
    74,248.35/111,370.65 = 21,658.29/x
  3. Step 3: Cross multiply
    74,248.35x = 111,370.65 × 21,658.29
  4. Step 4: Simplify right side
    74,248.35x = 2,412,097,835.19
  5. Step 5: Solve for x
    x = 2,412,097,835.19/74,248.35
  6. Step 6: Final answer
    x = 32,486.89

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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.