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Finding the Fourth Proportional to 671,843.16, 927,151.38 and 385,389.90

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Solution

The fourth proportional to 671,843.16, 927,151.38 and 385,389.90 is: 531,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,843.16 : 927,151.38 = 385,389.90 : x
  2. Step 2: Convert to fraction form
    671,843.16/927,151.38 = 385,389.90/x
  3. Step 3: Cross multiply
    671,843.16x = 927,151.38 × 385,389.90
  4. Step 4: Simplify right side
    671,843.16x = 357,314,777,623.06
  5. Step 5: Solve for x
    x = 357,314,777,623.06/671,843.16
  6. Step 6: Final answer
    x = 531,842.55

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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.