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Finding the Fourth Proportional to 57,356.84, 79,218.68 and 38,205.07

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Solution

The fourth proportional to 57,356.84, 79,218.68 and 38,205.07 is: 52,767.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,356.84 : 79,218.68 = 38,205.07 : x
  2. Step 2: Convert to fraction form
    57,356.84/79,218.68 = 38,205.07/x
  3. Step 3: Cross multiply
    57,356.84x = 79,218.68 × 38,205.07
  4. Step 4: Simplify right side
    57,356.84x = 3,026,554,825.64
  5. Step 5: Solve for x
    x = 3,026,554,825.64/57,356.84
  6. Step 6: Final answer
    x = 52,767.11

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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.