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Finding the Fourth Proportional to 122,292.61, 168,765.65 and 71,303.95

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Solution

The fourth proportional to 122,292.61, 168,765.65 and 71,303.95 is: 98,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,292.61 : 168,765.65 = 71,303.95 : x
  2. Step 2: Convert to fraction form
    122,292.61/168,765.65 = 71,303.95/x
  3. Step 3: Cross multiply
    122,292.61x = 168,765.65 × 71,303.95
  4. Step 4: Simplify right side
    122,292.61x = 12,033,657,112.80
  5. Step 5: Solve for x
    x = 12,033,657,112.80/122,292.61
  6. Step 6: Final answer
    x = 98,400.53

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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.