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Finding the Fourth Proportional to 111,171.66, 153,417.87 and 65,852.22

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Solution

The fourth proportional to 111,171.66, 153,417.87 and 65,852.22 is: 90,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,171.66 : 153,417.87 = 65,852.22 : x
  2. Step 2: Convert to fraction form
    111,171.66/153,417.87 = 65,852.22/x
  3. Step 3: Cross multiply
    111,171.66x = 153,417.87 × 65,852.22
  4. Step 4: Simplify right side
    111,171.66x = 10,102,907,327.17
  5. Step 5: Solve for x
    x = 10,102,907,327.17/111,171.66
  6. Step 6: Final answer
    x = 90,876.64

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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.