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Finding the Fourth Proportional to 611,117.60, 843,443.76 and 356,468.96

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Solution

The fourth proportional to 611,117.60, 843,443.76 and 356,468.96 is: 491,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,117.60 : 843,443.76 = 356,468.96 : x
  2. Step 2: Convert to fraction form
    611,117.60/843,443.76 = 356,468.96/x
  3. Step 3: Cross multiply
    611,117.60x = 843,443.76 × 356,468.96
  4. Step 4: Simplify right side
    611,117.60x = 300,661,519,945.69
  5. Step 5: Solve for x
    x = 300,661,519,945.69/611,117.60
  6. Step 6: Final answer
    x = 491,986.35

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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.