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Finding the Fourth Proportional to 516,008.80, 774,013.20 and 348,047.20

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Solution

The fourth proportional to 516,008.80, 774,013.20 and 348,047.20 is: 522,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,008.80 : 774,013.20 = 348,047.20 : x
  2. Step 2: Convert to fraction form
    516,008.80/774,013.20 = 348,047.20/x
  3. Step 3: Cross multiply
    516,008.80x = 774,013.20 × 348,047.20
  4. Step 4: Simplify right side
    516,008.80x = 269,393,127,023.04
  5. Step 5: Solve for x
    x = 269,393,127,023.04/516,008.80
  6. Step 6: Final answer
    x = 522,070.80

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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.