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Finding the Fourth Proportional to 503,220.80, 754,928.40 and 148,246.40

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Solution

The fourth proportional to 503,220.80, 754,928.40 and 148,246.40 is: 222,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,220.80 : 754,928.40 = 148,246.40 : x
  2. Step 2: Convert to fraction form
    503,220.80/754,928.40 = 148,246.40/x
  3. Step 3: Cross multiply
    503,220.80x = 754,928.40 × 148,246.40
  4. Step 4: Simplify right side
    503,220.80x = 111,915,417,557.76
  5. Step 5: Solve for x
    x = 111,915,417,557.76/503,220.80
  6. Step 6: Final answer
    x = 222,398.23

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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.