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Finding the Fourth Proportional to 308,007.83, 425,046.29 and 172,043.66

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Solution

The fourth proportional to 308,007.83, 425,046.29 and 172,043.66 is: 237,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,007.83 : 425,046.29 = 172,043.66 : x
  2. Step 2: Convert to fraction form
    308,007.83/425,046.29 = 172,043.66/x
  3. Step 3: Cross multiply
    308,007.83x = 425,046.29 × 172,043.66
  4. Step 4: Simplify right side
    308,007.83x = 73,126,519,603.42
  5. Step 5: Solve for x
    x = 73,126,519,603.42/308,007.83
  6. Step 6: Final answer
    x = 237,417.73

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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.