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Finding the Fourth Proportional to 122,837.49, 184,248.95 and 72,264.96

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Solution

The fourth proportional to 122,837.49, 184,248.95 and 72,264.96 is: 108,393.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,837.49 : 184,248.95 = 72,264.96 : x
  2. Step 2: Convert to fraction form
    122,837.49/184,248.95 = 72,264.96/x
  3. Step 3: Cross multiply
    122,837.49x = 184,248.95 × 72,264.96
  4. Step 4: Simplify right side
    122,837.49x = 13,314,742,640.47
  5. Step 5: Solve for x
    x = 13,314,742,640.47/122,837.49
  6. Step 6: Final answer
    x = 108,393.15

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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.