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Finding the Fourth Proportional to 111,386.91, 153,714.20 and 63,640.11

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Solution

The fourth proportional to 111,386.91, 153,714.20 and 63,640.11 is: 87,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,386.91 : 153,714.20 = 63,640.11 : x
  2. Step 2: Convert to fraction form
    111,386.91/153,714.20 = 63,640.11/x
  3. Step 3: Cross multiply
    111,386.91x = 153,714.20 × 63,640.11
  4. Step 4: Simplify right side
    111,386.91x = 9,782,388,278.36
  5. Step 5: Solve for x
    x = 9,782,388,278.36/111,386.91
  6. Step 6: Final answer
    x = 87,823.50

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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.