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Finding the Fourth Proportional to 91,409.33, 137,064.78 and 49,312.01

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Solution

The fourth proportional to 91,409.33, 137,064.78 and 49,312.01 is: 73,941.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,409.33 : 137,064.78 = 49,312.01 : x
  2. Step 2: Convert to fraction form
    91,409.33/137,064.78 = 49,312.01/x
  3. Step 3: Cross multiply
    91,409.33x = 137,064.78 × 49,312.01
  4. Step 4: Simplify right side
    91,409.33x = 6,758,939,116.68
  5. Step 5: Solve for x
    x = 6,758,939,116.68/91,409.33
  6. Step 6: Final answer
    x = 73,941.46

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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.