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Finding the Fourth Proportional to 117,139.60, 175,707.85 and 28,393.89

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Solution

The fourth proportional to 117,139.60, 175,707.85 and 28,393.89 is: 42,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,139.60 : 175,707.85 = 28,393.89 : x
  2. Step 2: Convert to fraction form
    117,139.60/175,707.85 = 28,393.89/x
  3. Step 3: Cross multiply
    117,139.60x = 175,707.85 × 28,393.89
  4. Step 4: Simplify right side
    117,139.60x = 4,989,029,365.04
  5. Step 5: Solve for x
    x = 4,989,029,365.04/117,139.60
  6. Step 6: Final answer
    x = 42,590.46

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.