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Finding the Fourth Proportional to 98,907.87, 136,492.90 and 53,586.17

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Solution

The fourth proportional to 98,907.87, 136,492.90 and 53,586.17 is: 73,948.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,907.87 : 136,492.90 = 53,586.17 : x
  2. Step 2: Convert to fraction form
    98,907.87/136,492.90 = 53,586.17/x
  3. Step 3: Cross multiply
    98,907.87x = 136,492.90 × 53,586.17
  4. Step 4: Simplify right side
    98,907.87x = 7,314,131,438.61
  5. Step 5: Solve for x
    x = 7,314,131,438.61/98,907.87
  6. Step 6: Final answer
    x = 73,948.93

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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.