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Finding the Fourth Proportional to 111,079.37, 153,130.08 and 79,192.91

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Solution

The fourth proportional to 111,079.37, 153,130.08 and 79,192.91 is: 109,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,079.37 : 153,130.08 = 79,192.91 : x
  2. Step 2: Convert to fraction form
    111,079.37/153,130.08 = 79,192.91/x
  3. Step 3: Cross multiply
    111,079.37x = 153,130.08 × 79,192.91
  4. Step 4: Simplify right side
    111,079.37x = 12,126,816,643.73
  5. Step 5: Solve for x
    x = 12,126,816,643.73/111,079.37
  6. Step 6: Final answer
    x = 109,172.54

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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.