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Finding the Fourth Proportional to 111,390.44, 153,726.94 and 63,642.77

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Solution

The fourth proportional to 111,390.44, 153,726.94 and 63,642.77 is: 87,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,390.44 : 153,726.94 = 63,642.77 : x
  2. Step 2: Convert to fraction form
    111,390.44/153,726.94 = 63,642.77/x
  3. Step 3: Cross multiply
    111,390.44x = 153,726.94 × 63,642.77
  4. Step 4: Simplify right side
    111,390.44x = 9,783,607,516.59
  5. Step 5: Solve for x
    x = 9,783,607,516.59/111,390.44
  6. Step 6: Final answer
    x = 87,831.66

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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.