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Finding the Fourth Proportional to 210,655.49, 315,936.45 and 60,863.00

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Solution

The fourth proportional to 210,655.49, 315,936.45 and 60,863.00 is: 91,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,655.49 : 315,936.45 = 60,863.00 : x
  2. Step 2: Convert to fraction form
    210,655.49/315,936.45 = 60,863.00/x
  3. Step 3: Cross multiply
    210,655.49x = 315,936.45 × 60,863.00
  4. Step 4: Simplify right side
    210,655.49x = 19,228,838,576.67
  5. Step 5: Solve for x
    x = 19,228,838,576.67/210,655.49
  6. Step 6: Final answer
    x = 91,280.98

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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.