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Finding the Fourth Proportional to 61,240.46, 91,873.11 and 19,118.84

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Solution

The fourth proportional to 61,240.46, 91,873.11 and 19,118.84 is: 28,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,240.46 : 91,873.11 = 19,118.84 : x
  2. Step 2: Convert to fraction form
    61,240.46/91,873.11 = 19,118.84/x
  3. Step 3: Cross multiply
    61,240.46x = 91,873.11 × 19,118.84
  4. Step 4: Simplify right side
    61,240.46x = 1,756,506,831.03
  5. Step 5: Solve for x
    x = 1,756,506,831.03/61,240.46
  6. Step 6: Final answer
    x = 28,682.13

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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.