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Finding the Fourth Proportional to 61,724.61, 85,180.08 and 33,430.31

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Solution

The fourth proportional to 61,724.61, 85,180.08 and 33,430.31 is: 46,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,724.61 : 85,180.08 = 33,430.31 : x
  2. Step 2: Convert to fraction form
    61,724.61/85,180.08 = 33,430.31/x
  3. Step 3: Cross multiply
    61,724.61x = 85,180.08 × 33,430.31
  4. Step 4: Simplify right side
    61,724.61x = 2,847,596,054.32
  5. Step 5: Solve for x
    x = 2,847,596,054.32/61,724.61
  6. Step 6: Final answer
    x = 46,133.88

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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.