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Finding the Fourth Proportional to 111,390.06, 153,726.42 and 63,642.38

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Solution

The fourth proportional to 111,390.06, 153,726.42 and 63,642.38 is: 87,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,390.06 : 153,726.42 = 63,642.38 : x
  2. Step 2: Convert to fraction form
    111,390.06/153,726.42 = 63,642.38/x
  3. Step 3: Cross multiply
    111,390.06x = 153,726.42 × 63,642.38
  4. Step 4: Simplify right side
    111,390.06x = 9,783,515,237.68
  5. Step 5: Solve for x
    x = 9,783,515,237.68/111,390.06
  6. Step 6: Final answer
    x = 87,831.13

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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.