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Finding the Fourth Proportional to 210,962.56, 316,403.52 and 63,218.56

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Solution

The fourth proportional to 210,962.56, 316,403.52 and 63,218.56 is: 94,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,962.56 : 316,403.52 = 63,218.56 : x
  2. Step 2: Convert to fraction form
    210,962.56/316,403.52 = 63,218.56/x
  3. Step 3: Cross multiply
    210,962.56x = 316,403.52 × 63,218.56
  4. Step 4: Simplify right side
    210,962.56x = 20,002,574,913.33
  5. Step 5: Solve for x
    x = 20,002,574,913.33/210,962.56
  6. Step 6: Final answer
    x = 94,815.76

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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.