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Finding the Fourth Proportional to 99,987.48, 150,036.57 and 59,907.97

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Solution

The fourth proportional to 99,987.48, 150,036.57 and 59,907.97 is: 89,895.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,987.48 : 150,036.57 = 59,907.97 : x
  2. Step 2: Convert to fraction form
    99,987.48/150,036.57 = 59,907.97/x
  3. Step 3: Cross multiply
    99,987.48x = 150,036.57 × 59,907.97
  4. Step 4: Simplify right side
    99,987.48x = 8,988,386,522.01
  5. Step 5: Solve for x
    x = 8,988,386,522.01/99,987.48
  6. Step 6: Final answer
    x = 89,895.12

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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.