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Finding the Fourth Proportional to 74,838.88, 103,276.11 and 40,848.04

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Solution

The fourth proportional to 74,838.88, 103,276.11 and 40,848.04 is: 56,369.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,838.88 : 103,276.11 = 40,848.04 : x
  2. Step 2: Convert to fraction form
    74,838.88/103,276.11 = 40,848.04/x
  3. Step 3: Cross multiply
    74,838.88x = 103,276.11 × 40,848.04
  4. Step 4: Simplify right side
    74,838.88x = 4,218,626,672.32
  5. Step 5: Solve for x
    x = 4,218,626,672.32/74,838.88
  6. Step 6: Final answer
    x = 56,369.45

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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.