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Finding the Fourth Proportional to 111,474.50, 153,784.58 and 66,154.39

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Solution

The fourth proportional to 111,474.50, 153,784.58 and 66,154.39 is: 91,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,474.50 : 153,784.58 = 66,154.39 : x
  2. Step 2: Convert to fraction form
    111,474.50/153,784.58 = 66,154.39/x
  3. Step 3: Cross multiply
    111,474.50x = 153,784.58 × 66,154.39
  4. Step 4: Simplify right side
    111,474.50x = 10,173,524,366.07
  5. Step 5: Solve for x
    x = 10,173,524,366.07/111,474.50
  6. Step 6: Final answer
    x = 91,263.25

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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.