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Finding the Fourth Proportional to 112,793.90, 155,645.24 and 65,038.02

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Solution

The fourth proportional to 112,793.90, 155,645.24 and 65,038.02 is: 89,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,793.90 : 155,645.24 = 65,038.02 : x
  2. Step 2: Convert to fraction form
    112,793.90/155,645.24 = 65,038.02/x
  3. Step 3: Cross multiply
    112,793.90x = 155,645.24 × 65,038.02
  4. Step 4: Simplify right side
    112,793.90x = 10,122,858,232.02
  5. Step 5: Solve for x
    x = 10,122,858,232.02/112,793.90
  6. Step 6: Final answer
    x = 89,746.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.