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Finding the Fourth Proportional to 74,762.46, 103,165.65 and 42,929.46

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Solution

The fourth proportional to 74,762.46, 103,165.65 and 42,929.46 is: 59,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,762.46 : 103,165.65 = 42,929.46 : x
  2. Step 2: Convert to fraction form
    74,762.46/103,165.65 = 42,929.46/x
  3. Step 3: Cross multiply
    74,762.46x = 103,165.65 × 42,929.46
  4. Step 4: Simplify right side
    74,762.46x = 4,428,845,645.05
  5. Step 5: Solve for x
    x = 4,428,845,645.05/74,762.46
  6. Step 6: Final answer
    x = 59,238.90

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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.