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Finding the Fourth Proportional to 637,768, 880,055.95 and 392,713.47

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Solution

The fourth proportional to 637,768, 880,055.95 and 392,713.47 is: 541,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,768 : 880,055.95 = 392,713.47 : x
  2. Step 2: Convert to fraction form
    637,768/880,055.95 = 392,713.47/x
  3. Step 3: Cross multiply
    637,768x = 880,055.95 × 392,713.47
  4. Step 4: Simplify right side
    637,768x = 345,609,825,918.65
  5. Step 5: Solve for x
    x = 345,609,825,918.65/637,768
  6. Step 6: Final answer
    x = 541,905.25

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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.