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Finding the Fourth Proportional to 117,281.70, 175,920.89 and 28,535.40

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Solution

The fourth proportional to 117,281.70, 175,920.89 and 28,535.40 is: 42,802.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,281.70 : 175,920.89 = 28,535.40 : x
  2. Step 2: Convert to fraction form
    117,281.70/175,920.89 = 28,535.40/x
  3. Step 3: Cross multiply
    117,281.70x = 175,920.89 × 28,535.40
  4. Step 4: Simplify right side
    117,281.70x = 5,019,972,821.83
  5. Step 5: Solve for x
    x = 5,019,972,821.83/117,281.70
  6. Step 6: Final answer
    x = 42,802.69

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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.