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Finding the Fourth Proportional to 111,320.60, 153,620.16 and 61,019.60

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Solution

The fourth proportional to 111,320.60, 153,620.16 and 61,019.60 is: 84,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,320.60 : 153,620.16 = 61,019.60 : x
  2. Step 2: Convert to fraction form
    111,320.60/153,620.16 = 61,019.60/x
  3. Step 3: Cross multiply
    111,320.60x = 153,620.16 × 61,019.60
  4. Step 4: Simplify right side
    111,320.60x = 9,373,840,715.14
  5. Step 5: Solve for x
    x = 9,373,840,715.14/111,320.60
  6. Step 6: Final answer
    x = 84,205.80

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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.