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Finding the Fourth Proportional to 58,858.77, 81,238.01 and 38,717.64

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Solution

The fourth proportional to 58,858.77, 81,238.01 and 38,717.64 is: 53,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,858.77 : 81,238.01 = 38,717.64 : x
  2. Step 2: Convert to fraction form
    58,858.77/81,238.01 = 38,717.64/x
  3. Step 3: Cross multiply
    58,858.77x = 81,238.01 × 38,717.64
  4. Step 4: Simplify right side
    58,858.77x = 3,145,343,831.91
  5. Step 5: Solve for x
    x = 3,145,343,831.91/58,858.77
  6. Step 6: Final answer
    x = 53,438.83

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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.