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Finding the Fourth Proportional to 653,826.70, 980,740.05 and 543,234.70

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Solution

The fourth proportional to 653,826.70, 980,740.05 and 543,234.70 is: 814,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,826.70 : 980,740.05 = 543,234.70 : x
  2. Step 2: Convert to fraction form
    653,826.70/980,740.05 = 543,234.70/x
  3. Step 3: Cross multiply
    653,826.70x = 980,740.05 × 543,234.70
  4. Step 4: Simplify right side
    653,826.70x = 532,772,026,839.74
  5. Step 5: Solve for x
    x = 532,772,026,839.74/653,826.70
  6. Step 6: Final answer
    x = 814,852.05

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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.