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Finding the Fourth Proportional to 119,937, 165,515.46 and 66,222.12

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Solution

The fourth proportional to 119,937, 165,515.46 and 66,222.12 is: 91,387.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,937 : 165,515.46 = 66,222.12 : x
  2. Step 2: Convert to fraction form
    119,937/165,515.46 = 66,222.12/x
  3. Step 3: Cross multiply
    119,937x = 165,515.46 × 66,222.12
  4. Step 4: Simplify right side
    119,937x = 10,960,784,653.98
  5. Step 5: Solve for x
    x = 10,960,784,653.98/119,937
  6. Step 6: Final answer
    x = 91,387.85

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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.