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Finding the Fourth Proportional to 111,398.98, 153,800.46 and 77,396.52

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Solution

The fourth proportional to 111,398.98, 153,800.46 and 77,396.52 is: 106,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,398.98 : 153,800.46 = 77,396.52 : x
  2. Step 2: Convert to fraction form
    111,398.98/153,800.46 = 77,396.52/x
  3. Step 3: Cross multiply
    111,398.98x = 153,800.46 × 77,396.52
  4. Step 4: Simplify right side
    111,398.98x = 11,903,620,378.40
  5. Step 5: Solve for x
    x = 11,903,620,378.40/111,398.98
  6. Step 6: Final answer
    x = 106,855.74

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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.