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Finding the Fourth Proportional to 547,660.70, 821,428.76 and 148,332.60

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Solution

The fourth proportional to 547,660.70, 821,428.76 and 148,332.60 is: 222,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,660.70 : 821,428.76 = 148,332.60 : x
  2. Step 2: Convert to fraction form
    547,660.70/821,428.76 = 148,332.60/x
  3. Step 3: Cross multiply
    547,660.70x = 821,428.76 × 148,332.60
  4. Step 4: Simplify right side
    547,660.70x = 121,844,663,685.58
  5. Step 5: Solve for x
    x = 121,844,663,685.58/547,660.70
  6. Step 6: Final answer
    x = 222,482.03

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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.