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Finding the Fourth Proportional to 58,907.61, 81,341.55 and 54,633.78

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Solution

The fourth proportional to 58,907.61, 81,341.55 and 54,633.78 is: 75,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,907.61 : 81,341.55 = 54,633.78 : x
  2. Step 2: Convert to fraction form
    58,907.61/81,341.55 = 54,633.78/x
  3. Step 3: Cross multiply
    58,907.61x = 81,341.55 × 54,633.78
  4. Step 4: Simplify right side
    58,907.61x = 4,443,996,347.56
  5. Step 5: Solve for x
    x = 4,443,996,347.56/58,907.61
  6. Step 6: Final answer
    x = 75,440.11

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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.