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Finding the Fourth Proportional to 153,985, 230,986.26 and 43,185.64

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Solution

The fourth proportional to 153,985, 230,986.26 and 43,185.64 is: 64,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,985 : 230,986.26 = 43,185.64 : x
  2. Step 2: Convert to fraction form
    153,985/230,986.26 = 43,185.64/x
  3. Step 3: Cross multiply
    153,985x = 230,986.26 × 43,185.64
  4. Step 4: Simplify right side
    153,985x = 9,975,289,469.31
  5. Step 5: Solve for x
    x = 9,975,289,469.31/153,985
  6. Step 6: Final answer
    x = 64,780.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.