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Finding the Fourth Proportional to 122,320.84, 168,804.36 and 73,916.04

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Solution

The fourth proportional to 122,320.84, 168,804.36 and 73,916.04 is: 102,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,320.84 : 168,804.36 = 73,916.04 : x
  2. Step 2: Convert to fraction form
    122,320.84/168,804.36 = 73,916.04/x
  3. Step 3: Cross multiply
    122,320.84x = 168,804.36 × 73,916.04
  4. Step 4: Simplify right side
    122,320.84x = 12,477,349,825.93
  5. Step 5: Solve for x
    x = 12,477,349,825.93/122,320.84
  6. Step 6: Final answer
    x = 102,005.10

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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.