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Finding the Fourth Proportional to 542,969.80, 814,454.70 and 519,933.40

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Solution

The fourth proportional to 542,969.80, 814,454.70 and 519,933.40 is: 779,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,969.80 : 814,454.70 = 519,933.40 : x
  2. Step 2: Convert to fraction form
    542,969.80/814,454.70 = 519,933.40/x
  3. Step 3: Cross multiply
    542,969.80x = 814,454.70 × 519,933.40
  4. Step 4: Simplify right side
    542,969.80x = 423,462,201,316.98
  5. Step 5: Solve for x
    x = 423,462,201,316.98/542,969.80
  6. Step 6: Final answer
    x = 779,900.10

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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.