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Finding the Fourth Proportional to 391,593.40, 586,223.70 and 233,740.60

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Solution

The fourth proportional to 391,593.40, 586,223.70 and 233,740.60 is: 349,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,593.40 : 586,223.70 = 233,740.60 : x
  2. Step 2: Convert to fraction form
    391,593.40/586,223.70 = 233,740.60/x
  3. Step 3: Cross multiply
    391,593.40x = 586,223.70 × 233,740.60
  4. Step 4: Simplify right side
    391,593.40x = 137,024,279,372.22
  5. Step 5: Solve for x
    x = 137,024,279,372.22/391,593.40
  6. Step 6: Final answer
    x = 349,914.68

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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.