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Finding the Fourth Proportional to 153,576.57, 211,952.88 and 85,599.75

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Solution

The fourth proportional to 153,576.57, 211,952.88 and 85,599.75 is: 118,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,576.57 : 211,952.88 = 85,599.75 : x
  2. Step 2: Convert to fraction form
    153,576.57/211,952.88 = 85,599.75/x
  3. Step 3: Cross multiply
    153,576.57x = 211,952.88 × 85,599.75
  4. Step 4: Simplify right side
    153,576.57x = 18,143,113,539.78
  5. Step 5: Solve for x
    x = 18,143,113,539.78/153,576.57
  6. Step 6: Final answer
    x = 118,137.25

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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.