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Finding the Fourth Proportional to 122,473.61, 169,023.35 and 68,762.15

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Solution

The fourth proportional to 122,473.61, 169,023.35 and 68,762.15 is: 94,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,473.61 : 169,023.35 = 68,762.15 : x
  2. Step 2: Convert to fraction form
    122,473.61/169,023.35 = 68,762.15/x
  3. Step 3: Cross multiply
    122,473.61x = 169,023.35 × 68,762.15
  4. Step 4: Simplify right side
    122,473.61x = 11,622,408,602.39
  5. Step 5: Solve for x
    x = 11,622,408,602.39/122,473.61
  6. Step 6: Final answer
    x = 94,897.25

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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.