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Finding the Fourth Proportional to 99,688.93, 149,489.65 and 37,315.69

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Solution

The fourth proportional to 99,688.93, 149,489.65 and 37,315.69 is: 55,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,688.93 : 149,489.65 = 37,315.69 : x
  2. Step 2: Convert to fraction form
    99,688.93/149,489.65 = 37,315.69/x
  3. Step 3: Cross multiply
    99,688.93x = 149,489.65 × 37,315.69
  4. Step 4: Simplify right side
    99,688.93x = 5,578,309,110.53
  5. Step 5: Solve for x
    x = 5,578,309,110.53/99,688.93
  6. Step 6: Final answer
    x = 55,957.16

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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.