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Finding the Fourth Proportional to 103,768.80, 155,403.72 and 59,260.64

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Solution

The fourth proportional to 103,768.80, 155,403.72 and 59,260.64 is: 88,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.80 : 155,403.72 = 59,260.64 : x
  2. Step 2: Convert to fraction form
    103,768.80/155,403.72 = 59,260.64/x
  3. Step 3: Cross multiply
    103,768.80x = 155,403.72 × 59,260.64
  4. Step 4: Simplify right side
    103,768.80x = 9,209,323,905.58
  5. Step 5: Solve for x
    x = 9,209,323,905.58/103,768.80
  6. Step 6: Final answer
    x = 88,748.49

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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.