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Finding the Fourth Proportional to 64,385.92, 96,599.84 and 31,109.76

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Solution

The fourth proportional to 64,385.92, 96,599.84 and 31,109.76 is: 46,674.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,385.92 : 96,599.84 = 31,109.76 : x
  2. Step 2: Convert to fraction form
    64,385.92/96,599.84 = 31,109.76/x
  3. Step 3: Cross multiply
    64,385.92x = 96,599.84 × 31,109.76
  4. Step 4: Simplify right side
    64,385.92x = 3,005,197,838.44
  5. Step 5: Solve for x
    x = 3,005,197,838.44/64,385.92
  6. Step 6: Final answer
    x = 46,674.77

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1.5x scale

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.