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Finding the Fourth Proportional to 122,703.60, 183,947.40 and 83,132.40

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Solution

The fourth proportional to 122,703.60, 183,947.40 and 83,132.40 is: 124,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,703.60 : 183,947.40 = 83,132.40 : x
  2. Step 2: Convert to fraction form
    122,703.60/183,947.40 = 83,132.40/x
  3. Step 3: Cross multiply
    122,703.60x = 183,947.40 × 83,132.40
  4. Step 4: Simplify right side
    122,703.60x = 15,291,988,835.76
  5. Step 5: Solve for x
    x = 15,291,988,835.76/122,703.60
  6. Step 6: Final answer
    x = 124,625.43

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1.5x scale

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.