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Finding the Fourth Proportional to 211,244.34, 316,866.74 and 53,472.79

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Solution

The fourth proportional to 211,244.34, 316,866.74 and 53,472.79 is: 80,209.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,244.34 : 316,866.74 = 53,472.79 : x
  2. Step 2: Convert to fraction form
    211,244.34/316,866.74 = 53,472.79/x
  3. Step 3: Cross multiply
    211,244.34x = 316,866.74 × 53,472.79
  4. Step 4: Simplify right side
    211,244.34x = 16,943,748,774.72
  5. Step 5: Solve for x
    x = 16,943,748,774.72/211,244.34
  6. Step 6: Final answer
    x = 80,209.24

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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.