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Finding the Fourth Proportional to 386,057.03, 578,888.11 and 161,356.15

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Solution

The fourth proportional to 386,057.03, 578,888.11 and 161,356.15 is: 241,951.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,057.03 : 578,888.11 = 161,356.15 : x
  2. Step 2: Convert to fraction form
    386,057.03/578,888.11 = 161,356.15/x
  3. Step 3: Cross multiply
    386,057.03x = 578,888.11 × 161,356.15
  4. Step 4: Simplify right side
    386,057.03x = 93,407,153,009.16
  5. Step 5: Solve for x
    x = 93,407,153,009.16/386,057.03
  6. Step 6: Final answer
    x = 241,951.70

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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.