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Finding the Fourth Proportional to 639,376, 959,055.66 and 183,979.12

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Solution

The fourth proportional to 639,376, 959,055.66 and 183,979.12 is: 275,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,376 : 959,055.66 = 183,979.12 : x
  2. Step 2: Convert to fraction form
    639,376/959,055.66 = 183,979.12/x
  3. Step 3: Cross multiply
    639,376x = 959,055.66 × 183,979.12
  4. Step 4: Simplify right side
    639,376x = 176,446,216,357.82
  5. Step 5: Solve for x
    x = 176,446,216,357.82/639,376
  6. Step 6: Final answer
    x = 275,966.28

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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.