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Finding the Fourth Proportional to 74,688.63, 111,775.17 and 46,213.89

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Solution

The fourth proportional to 74,688.63, 111,775.17 and 46,213.89 is: 69,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.63 : 111,775.17 = 46,213.89 : x
  2. Step 2: Convert to fraction form
    74,688.63/111,775.17 = 46,213.89/x
  3. Step 3: Cross multiply
    74,688.63x = 111,775.17 × 46,213.89
  4. Step 4: Simplify right side
    74,688.63x = 5,165,565,411.11
  5. Step 5: Solve for x
    x = 5,165,565,411.11/74,688.63
  6. Step 6: Final answer
    x = 69,161.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.