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Finding the Fourth Proportional to 117,135.70, 175,701.98 and 28,389.97

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Solution

The fourth proportional to 117,135.70, 175,701.98 and 28,389.97 is: 42,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,135.70 : 175,701.98 = 28,389.97 : x
  2. Step 2: Convert to fraction form
    117,135.70/175,701.98 = 28,389.97/x
  3. Step 3: Cross multiply
    117,135.70x = 175,701.98 × 28,389.97
  4. Step 4: Simplify right side
    117,135.70x = 4,988,173,572.86
  5. Step 5: Solve for x
    x = 4,988,173,572.86/117,135.70
  6. Step 6: Final answer
    x = 42,584.57

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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.