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Finding the Fourth Proportional to 74,465.55, 102,764.75 and 42,644.70

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Solution

The fourth proportional to 74,465.55, 102,764.75 and 42,644.70 is: 58,851.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,465.55 : 102,764.75 = 42,644.70 : x
  2. Step 2: Convert to fraction form
    74,465.55/102,764.75 = 42,644.70/x
  3. Step 3: Cross multiply
    74,465.55x = 102,764.75 × 42,644.70
  4. Step 4: Simplify right side
    74,465.55x = 4,382,371,721.10
  5. Step 5: Solve for x
    x = 4,382,371,721.10/74,465.55
  6. Step 6: Final answer
    x = 58,851.00

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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.