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Finding the Fourth Proportional to 64,508.52, 89,021.76 and 36,214.20

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Solution

The fourth proportional to 64,508.52, 89,021.76 and 36,214.20 is: 49,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,508.52 : 89,021.76 = 36,214.20 : x
  2. Step 2: Convert to fraction form
    64,508.52/89,021.76 = 36,214.20/x
  3. Step 3: Cross multiply
    64,508.52x = 89,021.76 × 36,214.20
  4. Step 4: Simplify right side
    64,508.52x = 3,223,851,820.99
  5. Step 5: Solve for x
    x = 3,223,851,820.99/64,508.52
  6. Step 6: Final answer
    x = 49,975.60

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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.