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Finding the Fourth Proportional to 391,136.94, 539,707.32 and 227,820.32

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Solution

The fourth proportional to 391,136.94, 539,707.32 and 227,820.32 is: 314,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,136.94 : 539,707.32 = 227,820.32 : x
  2. Step 2: Convert to fraction form
    391,136.94/539,707.32 = 227,820.32/x
  3. Step 3: Cross multiply
    391,136.94x = 539,707.32 × 227,820.32
  4. Step 4: Simplify right side
    391,136.94x = 122,956,294,348.74
  5. Step 5: Solve for x
    x = 122,956,294,348.74/391,136.94
  6. Step 6: Final answer
    x = 314,356.13

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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.