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Finding the Fourth Proportional to 51,031.58, 70,425.11 and 28,060.21

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Solution

The fourth proportional to 51,031.58, 70,425.11 and 28,060.21 is: 38,723.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,031.58 : 70,425.11 = 28,060.21 : x
  2. Step 2: Convert to fraction form
    51,031.58/70,425.11 = 28,060.21/x
  3. Step 3: Cross multiply
    51,031.58x = 70,425.11 × 28,060.21
  4. Step 4: Simplify right side
    51,031.58x = 1,976,143,587.01
  5. Step 5: Solve for x
    x = 1,976,143,587.01/51,031.58
  6. Step 6: Final answer
    x = 38,723.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.