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Finding the Fourth Proportional to 61,366.32, 84,643.88 and 39,817.56

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Solution

The fourth proportional to 61,366.32, 84,643.88 and 39,817.56 is: 54,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,366.32 : 84,643.88 = 39,817.56 : x
  2. Step 2: Convert to fraction form
    61,366.32/84,643.88 = 39,817.56/x
  3. Step 3: Cross multiply
    61,366.32x = 84,643.88 × 39,817.56
  4. Step 4: Simplify right side
    61,366.32x = 3,370,312,571.45
  5. Step 5: Solve for x
    x = 3,370,312,571.45/61,366.32
  6. Step 6: Final answer
    x = 54,921.21

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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.