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Finding the Fourth Proportional to 153,507.40, 211,825.74 and 85,517.44

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Solution

The fourth proportional to 153,507.40, 211,825.74 and 85,517.44 is: 118,006.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,507.40 : 211,825.74 = 85,517.44 : x
  2. Step 2: Convert to fraction form
    153,507.40/211,825.74 = 85,517.44/x
  3. Step 3: Cross multiply
    153,507.40x = 211,825.74 × 85,517.44
  4. Step 4: Simplify right side
    153,507.40x = 18,114,795,010.91
  5. Step 5: Solve for x
    x = 18,114,795,010.91/153,507.40
  6. Step 6: Final answer
    x = 118,006.00

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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.