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Finding the Fourth Proportional to 386,057.53, 578,888.86 and 161,356.65

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Solution

The fourth proportional to 386,057.53, 578,888.86 and 161,356.65 is: 241,952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,057.53 : 578,888.86 = 161,356.65 : x
  2. Step 2: Convert to fraction form
    386,057.53/578,888.86 = 161,356.65/x
  3. Step 3: Cross multiply
    386,057.53x = 578,888.86 × 161,356.65
  4. Step 4: Simplify right side
    386,057.53x = 93,407,563,470.69
  5. Step 5: Solve for x
    x = 93,407,563,470.69/386,057.53
  6. Step 6: Final answer
    x = 241,952.45

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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.