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Finding the Fourth Proportional to 64,509.53, 89,023.14 and 36,215.19

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Solution

The fourth proportional to 64,509.53, 89,023.14 and 36,215.19 is: 49,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,509.53 : 89,023.14 = 36,215.19 : x
  2. Step 2: Convert to fraction form
    64,509.53/89,023.14 = 36,215.19/x
  3. Step 3: Cross multiply
    64,509.53x = 89,023.14 × 36,215.19
  4. Step 4: Simplify right side
    64,509.53x = 3,223,989,929.50
  5. Step 5: Solve for x
    x = 3,223,989,929.50/64,509.53
  6. Step 6: Final answer
    x = 49,976.96

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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.