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Finding the Fourth Proportional to 178,699.39, 268,058.31 and 45,580.81

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Solution

The fourth proportional to 178,699.39, 268,058.31 and 45,580.81 is: 68,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,699.39 : 268,058.31 = 45,580.81 : x
  2. Step 2: Convert to fraction form
    178,699.39/268,058.31 = 45,580.81/x
  3. Step 3: Cross multiply
    178,699.39x = 268,058.31 × 45,580.81
  4. Step 4: Simplify right side
    178,699.39x = 12,218,314,897.03
  5. Step 5: Solve for x
    x = 12,218,314,897.03/178,699.39
  6. Step 6: Final answer
    x = 68,373.57

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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.