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Finding the Fourth Proportional to 391,604.40, 587,406.60 and 96,116.40

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Solution

The fourth proportional to 391,604.40, 587,406.60 and 96,116.40 is: 144,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,604.40 : 587,406.60 = 96,116.40 : x
  2. Step 2: Convert to fraction form
    391,604.40/587,406.60 = 96,116.40/x
  3. Step 3: Cross multiply
    391,604.40x = 587,406.60 × 96,116.40
  4. Step 4: Simplify right side
    391,604.40x = 56,459,407,728.24
  5. Step 5: Solve for x
    x = 56,459,407,728.24/391,604.40
  6. Step 6: Final answer
    x = 144,174.60

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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.