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Finding the Fourth Proportional to 210,963.50, 316,497.10 and 63,219.50

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Solution

The fourth proportional to 210,963.50, 316,497.10 and 63,219.50 is: 94,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,963.50 : 316,497.10 = 63,219.50 : x
  2. Step 2: Convert to fraction form
    210,963.50/316,497.10 = 63,219.50/x
  3. Step 3: Cross multiply
    210,963.50x = 316,497.10 × 63,219.50
  4. Step 4: Simplify right side
    210,963.50x = 20,008,788,413.45
  5. Step 5: Solve for x
    x = 20,008,788,413.45/210,963.50
  6. Step 6: Final answer
    x = 94,844.79

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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.