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Finding the Fourth Proportional to 103,508.48, 155,238.02 and 28,627.02

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Solution

The fourth proportional to 103,508.48, 155,238.02 and 28,627.02 is: 42,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,508.48 : 155,238.02 = 28,627.02 : x
  2. Step 2: Convert to fraction form
    103,508.48/155,238.02 = 28,627.02/x
  3. Step 3: Cross multiply
    103,508.48x = 155,238.02 × 28,627.02
  4. Step 4: Simplify right side
    103,508.48x = 4,444,001,867.52
  5. Step 5: Solve for x
    x = 4,444,001,867.52/103,508.48
  6. Step 6: Final answer
    x = 42,933.70

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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.