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Finding the Fourth Proportional to 124,055.34, 171,123.49 and 78,041.81

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Solution

The fourth proportional to 124,055.34, 171,123.49 and 78,041.81 is: 107,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,055.34 : 171,123.49 = 78,041.81 : x
  2. Step 2: Convert to fraction form
    124,055.34/171,123.49 = 78,041.81/x
  3. Step 3: Cross multiply
    124,055.34x = 171,123.49 × 78,041.81
  4. Step 4: Simplify right side
    124,055.34x = 13,354,786,893.12
  5. Step 5: Solve for x
    x = 13,354,786,893.12/124,055.34
  6. Step 6: Final answer
    x = 107,651.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.