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Finding the Fourth Proportional to 152,993.64, 211,125.78 and 85,009.80

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Solution

The fourth proportional to 152,993.64, 211,125.78 and 85,009.80 is: 117,310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,993.64 : 211,125.78 = 85,009.80 : x
  2. Step 2: Convert to fraction form
    152,993.64/211,125.78 = 85,009.80/x
  3. Step 3: Cross multiply
    152,993.64x = 211,125.78 × 85,009.80
  4. Step 4: Simplify right side
    152,993.64x = 17,947,760,332.64
  5. Step 5: Solve for x
    x = 17,947,760,332.64/152,993.64
  6. Step 6: Final answer
    x = 117,310.50

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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.