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Finding the Fourth Proportional to 66,780.99, 92,157.91 and 36,154.40

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Solution

The fourth proportional to 66,780.99, 92,157.91 and 36,154.40 is: 49,893.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.99 : 92,157.91 = 36,154.40 : x
  2. Step 2: Convert to fraction form
    66,780.99/92,157.91 = 36,154.40/x
  3. Step 3: Cross multiply
    66,780.99x = 92,157.91 × 36,154.40
  4. Step 4: Simplify right side
    66,780.99x = 3,331,914,454.12
  5. Step 5: Solve for x
    x = 3,331,914,454.12/66,780.99
  6. Step 6: Final answer
    x = 49,893.16

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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.