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Finding the Fourth Proportional to 99,803.80, 149,815.05 and 62,406.10

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Solution

The fourth proportional to 99,803.80, 149,815.05 and 62,406.10 is: 93,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,803.80 : 149,815.05 = 62,406.10 : x
  2. Step 2: Convert to fraction form
    99,803.80/149,815.05 = 62,406.10/x
  3. Step 3: Cross multiply
    99,803.80x = 149,815.05 × 62,406.10
  4. Step 4: Simplify right side
    99,803.80x = 9,349,372,991.81
  5. Step 5: Solve for x
    x = 9,349,372,991.81/99,803.80
  6. Step 6: Final answer
    x = 93,677.53

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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.