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Finding the Fourth Proportional to 39,807.64, 59,690.88 and 11,724.04

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Solution

The fourth proportional to 39,807.64, 59,690.88 and 11,724.04 is: 17,580.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.64 : 59,690.88 = 11,724.04 : x
  2. Step 2: Convert to fraction form
    39,807.64/59,690.88 = 11,724.04/x
  3. Step 3: Cross multiply
    39,807.64x = 59,690.88 × 11,724.04
  4. Step 4: Simplify right side
    39,807.64x = 699,818,264.76
  5. Step 5: Solve for x
    x = 699,818,264.76/39,807.64
  6. Step 6: Final answer
    x = 17,580.00

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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.