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Finding the Fourth Proportional to 110,551.20, 152,440.20 and 74,678.96

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Solution

The fourth proportional to 110,551.20, 152,440.20 and 74,678.96 is: 102,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,551.20 : 152,440.20 = 74,678.96 : x
  2. Step 2: Convert to fraction form
    110,551.20/152,440.20 = 74,678.96/x
  3. Step 3: Cross multiply
    110,551.20x = 152,440.20 × 74,678.96
  4. Step 4: Simplify right side
    110,551.20x = 11,384,075,598.19
  5. Step 5: Solve for x
    x = 11,384,075,598.19/110,551.20
  6. Step 6: Final answer
    x = 102,975.60

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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.