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Finding the Fourth Proportional to 105,661.28, 158,491.64 and 26,775.28

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Solution

The fourth proportional to 105,661.28, 158,491.64 and 26,775.28 is: 40,162.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,661.28 : 158,491.64 = 26,775.28 : x
  2. Step 2: Convert to fraction form
    105,661.28/158,491.64 = 26,775.28/x
  3. Step 3: Cross multiply
    105,661.28x = 158,491.64 × 26,775.28
  4. Step 4: Simplify right side
    105,661.28x = 4,243,658,038.66
  5. Step 5: Solve for x
    x = 4,243,658,038.66/105,661.28
  6. Step 6: Final answer
    x = 40,162.85

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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.