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Finding the Fourth Proportional to 111,252.52, 153,522.90 and 65,981.80

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Solution

The fourth proportional to 111,252.52, 153,522.90 and 65,981.80 is: 91,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,252.52 : 153,522.90 = 65,981.80 : x
  2. Step 2: Convert to fraction form
    111,252.52/153,522.90 = 65,981.80/x
  3. Step 3: Cross multiply
    111,252.52x = 153,522.90 × 65,981.80
  4. Step 4: Simplify right side
    111,252.52x = 10,129,717,283.22
  5. Step 5: Solve for x
    x = 10,129,717,283.22/111,252.52
  6. Step 6: Final answer
    x = 91,051.58

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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.