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Finding the Fourth Proportional to 210,958.50, 316,489.59 and 63,214.50

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Solution

The fourth proportional to 210,958.50, 316,489.59 and 63,214.50 is: 94,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,958.50 : 316,489.59 = 63,214.50 : x
  2. Step 2: Convert to fraction form
    210,958.50/316,489.59 = 63,214.50/x
  3. Step 3: Cross multiply
    210,958.50x = 316,489.59 × 63,214.50
  4. Step 4: Simplify right side
    210,958.50x = 20,006,731,187.06
  5. Step 5: Solve for x
    x = 20,006,731,187.06/210,958.50
  6. Step 6: Final answer
    x = 94,837.28

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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.