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Finding the Fourth Proportional to 64,879.47, 89,525.66 and 38,015.82

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Solution

The fourth proportional to 64,879.47, 89,525.66 and 38,015.82 is: 52,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.47 : 89,525.66 = 38,015.82 : x
  2. Step 2: Convert to fraction form
    64,879.47/89,525.66 = 38,015.82/x
  3. Step 3: Cross multiply
    64,879.47x = 89,525.66 × 38,015.82
  4. Step 4: Simplify right side
    64,879.47x = 3,403,391,185.86
  5. Step 5: Solve for x
    x = 3,403,391,185.86/64,879.47
  6. Step 6: Final answer
    x = 52,457.14

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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.