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Finding the Fourth Proportional to 91,075.65, 125,742.96 and 62,442.96

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Solution

The fourth proportional to 91,075.65, 125,742.96 and 62,442.96 is: 86,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,075.65 : 125,742.96 = 62,442.96 : x
  2. Step 2: Convert to fraction form
    91,075.65/125,742.96 = 62,442.96/x
  3. Step 3: Cross multiply
    91,075.65x = 125,742.96 × 62,442.96
  4. Step 4: Simplify right side
    91,075.65x = 7,851,762,621.56
  5. Step 5: Solve for x
    x = 7,851,762,621.56/91,075.65
  6. Step 6: Final answer
    x = 86,211.44

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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.