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Finding the Fourth Proportional to 991,996.92, 1,369,062.78 and 562,230.90

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Solution

The fourth proportional to 991,996.92, 1,369,062.78 and 562,230.90 is: 775,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,996.92 : 1,369,062.78 = 562,230.90 : x
  2. Step 2: Convert to fraction form
    991,996.92/1,369,062.78 = 562,230.90/x
  3. Step 3: Cross multiply
    991,996.92x = 1,369,062.78 × 562,230.90
  4. Step 4: Simplify right side
    991,996.92x = 769,729,398,955.90
  5. Step 5: Solve for x
    x = 769,729,398,955.90/991,996.92
  6. Step 6: Final answer
    x = 775,939.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.