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Finding the Fourth Proportional to 713,965.60, 985,268.52 and 391,667.44

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Solution

The fourth proportional to 713,965.60, 985,268.52 and 391,667.44 is: 540,498.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,965.60 : 985,268.52 = 391,667.44 : x
  2. Step 2: Convert to fraction form
    713,965.60/985,268.52 = 391,667.44/x
  3. Step 3: Cross multiply
    713,965.60x = 985,268.52 × 391,667.44
  4. Step 4: Simplify right side
    713,965.60x = 385,897,598,940.99
  5. Step 5: Solve for x
    x = 385,897,598,940.99/713,965.60
  6. Step 6: Final answer
    x = 540,498.87

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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.