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Finding the Fourth Proportional to 74,681, 103,060.10 and 41,146.28

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Solution

The fourth proportional to 74,681, 103,060.10 and 41,146.28 is: 56,782.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,681 : 103,060.10 = 41,146.28 : x
  2. Step 2: Convert to fraction form
    74,681/103,060.10 = 41,146.28/x
  3. Step 3: Cross multiply
    74,681x = 103,060.10 × 41,146.28
  4. Step 4: Simplify right side
    74,681x = 4,240,539,731.43
  5. Step 5: Solve for x
    x = 4,240,539,731.43/74,681
  6. Step 6: Final answer
    x = 56,782.04

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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.