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Finding the Fourth Proportional to 678,693.17, 936,607.82 and 372,797.83

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Solution

The fourth proportional to 678,693.17, 936,607.82 and 372,797.83 is: 514,467.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,693.17 : 936,607.82 = 372,797.83 : x
  2. Step 2: Convert to fraction form
    678,693.17/936,607.82 = 372,797.83/x
  3. Step 3: Cross multiply
    678,693.17x = 936,607.82 × 372,797.83
  4. Step 4: Simplify right side
    678,693.17x = 349,165,362,857.03
  5. Step 5: Solve for x
    x = 349,165,362,857.03/678,693.17
  6. Step 6: Final answer
    x = 514,467.18

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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.