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Finding the Fourth Proportional to 211,603.68, 317,439.48 and 61,824.96

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Solution

The fourth proportional to 211,603.68, 317,439.48 and 61,824.96 is: 92,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,603.68 : 317,439.48 = 61,824.96 : x
  2. Step 2: Convert to fraction form
    211,603.68/317,439.48 = 61,824.96/x
  3. Step 3: Cross multiply
    211,603.68x = 317,439.48 × 61,824.96
  4. Step 4: Simplify right side
    211,603.68x = 19,625,683,153.42
  5. Step 5: Solve for x
    x = 19,625,683,153.42/211,603.68
  6. Step 6: Final answer
    x = 92,747.36

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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.