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Finding the Fourth Proportional to 103,615.90, 155,347.05 and 44,403.10

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Solution

The fourth proportional to 103,615.90, 155,347.05 and 44,403.10 is: 66,571.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.90 : 155,347.05 = 44,403.10 : x
  2. Step 2: Convert to fraction form
    103,615.90/155,347.05 = 44,403.10/x
  3. Step 3: Cross multiply
    103,615.90x = 155,347.05 × 44,403.10
  4. Step 4: Simplify right side
    103,615.90x = 6,897,890,595.86
  5. Step 5: Solve for x
    x = 6,897,890,595.86/103,615.90
  6. Step 6: Final answer
    x = 66,571.74

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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.