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Finding the Fourth Proportional to 19,892.84, 29,840.54 and 6,740.68

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Solution

The fourth proportional to 19,892.84, 29,840.54 and 6,740.68 is: 10,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,892.84 : 29,840.54 = 6,740.68 : x
  2. Step 2: Convert to fraction form
    19,892.84/29,840.54 = 6,740.68/x
  3. Step 3: Cross multiply
    19,892.84x = 29,840.54 × 6,740.68
  4. Step 4: Simplify right side
    19,892.84x = 201,145,531.17
  5. Step 5: Solve for x
    x = 201,145,531.17/19,892.84
  6. Step 6: Final answer
    x = 10,111.45

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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.