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Finding the Fourth Proportional to 308,570.53, 425,859.40 and 177,752.69

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Solution

The fourth proportional to 308,570.53, 425,859.40 and 177,752.69 is: 245,317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,570.53 : 425,859.40 = 177,752.69 : x
  2. Step 2: Convert to fraction form
    308,570.53/425,859.40 = 177,752.69/x
  3. Step 3: Cross multiply
    308,570.53x = 425,859.40 × 177,752.69
  4. Step 4: Simplify right side
    308,570.53x = 75,697,653,700.59
  5. Step 5: Solve for x
    x = 75,697,653,700.59/308,570.53
  6. Step 6: Final answer
    x = 245,317.19

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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.