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Finding the Fourth Proportional to 538,787.67, 801,820.00 and 520,847.79

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Solution

The fourth proportional to 538,787.67, 801,820.00 and 520,847.79 is: 775,122.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,787.67 : 801,820.00 = 520,847.79 : x
  2. Step 2: Convert to fraction form
    538,787.67/801,820.00 = 520,847.79/x
  3. Step 3: Cross multiply
    538,787.67x = 801,820.00 × 520,847.79
  4. Step 4: Simplify right side
    538,787.67x = 417,626,173,675.68
  5. Step 5: Solve for x
    x = 417,626,173,675.68/538,787.67
  6. Step 6: Final answer
    x = 775,122.00

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.