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Finding the Fourth Proportional to 391,465.91, 540,096.66 and 230,360.56

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Solution

The fourth proportional to 391,465.91, 540,096.66 and 230,360.56 is: 317,823.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,465.91 : 540,096.66 = 230,360.56 : x
  2. Step 2: Convert to fraction form
    391,465.91/540,096.66 = 230,360.56/x
  3. Step 3: Cross multiply
    391,465.91x = 540,096.66 × 230,360.56
  4. Step 4: Simplify right side
    391,465.91x = 124,416,967,701.49
  5. Step 5: Solve for x
    x = 124,416,967,701.49/391,465.91
  6. Step 6: Final answer
    x = 317,823.25

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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.