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Finding the Fourth Proportional to 62,920.94, 94,381.31 and 43,139.53

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Solution

The fourth proportional to 62,920.94, 94,381.31 and 43,139.53 is: 64,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,920.94 : 94,381.31 = 43,139.53 : x
  2. Step 2: Convert to fraction form
    62,920.94/94,381.31 = 43,139.53/x
  3. Step 3: Cross multiply
    62,920.94x = 94,381.31 × 43,139.53
  4. Step 4: Simplify right side
    62,920.94x = 4,071,565,226.08
  5. Step 5: Solve for x
    x = 4,071,565,226.08/62,920.94
  6. Step 6: Final answer
    x = 64,709.22

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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.