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Finding the Fourth Proportional to 38,749, 58,123.50 and 9,565

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Solution

The fourth proportional to 38,749, 58,123.50 and 9,565 is: 14,347.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,749 : 58,123.50 = 9,565 : x
  2. Step 2: Convert to fraction form
    38,749/58,123.50 = 9,565/x
  3. Step 3: Cross multiply
    38,749x = 58,123.50 × 9,565
  4. Step 4: Simplify right side
    38,749x = 555,951,277.50
  5. Step 5: Solve for x
    x = 555,951,277.50/38,749
  6. Step 6: Final answer
    x = 14,347.50

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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.