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Finding the Fourth Proportional to 122,603.52, 183,865.12 and 39,478.08

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Solution

The fourth proportional to 122,603.52, 183,865.12 and 39,478.08 is: 59,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,603.52 : 183,865.12 = 39,478.08 : x
  2. Step 2: Convert to fraction form
    122,603.52/183,865.12 = 39,478.08/x
  3. Step 3: Cross multiply
    122,603.52x = 183,865.12 × 39,478.08
  4. Step 4: Simplify right side
    122,603.52x = 7,258,641,916.57
  5. Step 5: Solve for x
    x = 7,258,641,916.57/122,603.52
  6. Step 6: Final answer
    x = 59,204.19

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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.