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Finding the Fourth Proportional to 58,920.81, 81,312.43 and 32,065.05

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Solution

The fourth proportional to 58,920.81, 81,312.43 and 32,065.05 is: 44,250.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,920.81 : 81,312.43 = 32,065.05 : x
  2. Step 2: Convert to fraction form
    58,920.81/81,312.43 = 32,065.05/x
  3. Step 3: Cross multiply
    58,920.81x = 81,312.43 × 32,065.05
  4. Step 4: Simplify right side
    58,920.81x = 2,607,286,566.68
  5. Step 5: Solve for x
    x = 2,607,286,566.68/58,920.81
  6. Step 6: Final answer
    x = 44,250.69

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Why These Related Problems?

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