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Finding the Fourth Proportional to 541,307.20, 811,960.80 and 141,947.20

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Solution

The fourth proportional to 541,307.20, 811,960.80 and 141,947.20 is: 212,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,307.20 : 811,960.80 = 141,947.20 : x
  2. Step 2: Convert to fraction form
    541,307.20/811,960.80 = 141,947.20/x
  3. Step 3: Cross multiply
    541,307.20x = 811,960.80 × 141,947.20
  4. Step 4: Simplify right side
    541,307.20x = 115,255,562,069.76
  5. Step 5: Solve for x
    x = 115,255,562,069.76/541,307.20
  6. Step 6: Final answer
    x = 212,920.80

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Double scale
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Similar ratio
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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.