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Finding the Fourth Proportional to 60,296.40, 90,421.41 and 28,682.10

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Solution

The fourth proportional to 60,296.40, 90,421.41 and 28,682.10 is: 43,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,296.40 : 90,421.41 = 28,682.10 : x
  2. Step 2: Convert to fraction form
    60,296.40/90,421.41 = 28,682.10/x
  3. Step 3: Cross multiply
    60,296.40x = 90,421.41 × 28,682.10
  4. Step 4: Simplify right side
    60,296.40x = 2,593,476,031.32
  5. Step 5: Solve for x
    x = 2,593,476,031.32/60,296.40
  6. Step 6: Final answer
    x = 43,012.12

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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.