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Finding the Fourth Proportional to 111,393.06, 153,730.56 and 63,645.38

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Solution

The fourth proportional to 111,393.06, 153,730.56 and 63,645.38 is: 87,835.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,393.06 : 153,730.56 = 63,645.38 : x
  2. Step 2: Convert to fraction form
    111,393.06/153,730.56 = 63,645.38/x
  3. Step 3: Cross multiply
    111,393.06x = 153,730.56 × 63,645.38
  4. Step 4: Simplify right side
    111,393.06x = 9,784,239,908.81
  5. Step 5: Solve for x
    x = 9,784,239,908.81/111,393.06
  6. Step 6: Final answer
    x = 87,835.27

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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.