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Finding the Fourth Proportional to 391,505.40, 586,091.70 and 233,652.60

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Solution

The fourth proportional to 391,505.40, 586,091.70 and 233,652.60 is: 349,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,505.40 : 586,091.70 = 233,652.60 : x
  2. Step 2: Convert to fraction form
    391,505.40/586,091.70 = 233,652.60/x
  3. Step 3: Cross multiply
    391,505.40x = 586,091.70 × 233,652.60
  4. Step 4: Simplify right side
    391,505.40x = 136,941,849,543.42
  5. Step 5: Solve for x
    x = 136,941,849,543.42/391,505.40
  6. Step 6: Final answer
    x = 349,782.79

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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.