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Finding the Fourth Proportional to 153,504.09, 211,851.22 and 85,532.13

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Solution

The fourth proportional to 153,504.09, 211,851.22 and 85,532.13 is: 118,043.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,504.09 : 211,851.22 = 85,532.13 : x
  2. Step 2: Convert to fraction form
    153,504.09/211,851.22 = 85,532.13/x
  3. Step 3: Cross multiply
    153,504.09x = 211,851.22 × 85,532.13
  4. Step 4: Simplify right side
    153,504.09x = 18,120,086,089.70
  5. Step 5: Solve for x
    x = 18,120,086,089.70/153,504.09
  6. Step 6: Final answer
    x = 118,043.02

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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.