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Finding the Fourth Proportional to 53,168.84, 79,728.96 and 19,864.48

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Solution

The fourth proportional to 53,168.84, 79,728.96 and 19,864.48 is: 29,787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,168.84 : 79,728.96 = 19,864.48 : x
  2. Step 2: Convert to fraction form
    53,168.84/79,728.96 = 19,864.48/x
  3. Step 3: Cross multiply
    53,168.84x = 79,728.96 × 19,864.48
  4. Step 4: Simplify right side
    53,168.84x = 1,583,774,331.34
  5. Step 5: Solve for x
    x = 1,583,774,331.34/53,168.84
  6. Step 6: Final answer
    x = 29,787.64

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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.