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Finding the Fourth Proportional to 211,058.20, 316,587.30 and 63,314.20

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Solution

The fourth proportional to 211,058.20, 316,587.30 and 63,314.20 is: 94,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,058.20 : 316,587.30 = 63,314.20 : x
  2. Step 2: Convert to fraction form
    211,058.20/316,587.30 = 63,314.20/x
  3. Step 3: Cross multiply
    211,058.20x = 316,587.30 × 63,314.20
  4. Step 4: Simplify right side
    211,058.20x = 20,044,471,629.66
  5. Step 5: Solve for x
    x = 20,044,471,629.66/211,058.20
  6. Step 6: Final answer
    x = 94,971.30

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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.