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Finding the Fourth Proportional to 57,690.59, 79,582.16 and 39,794.45

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Solution

The fourth proportional to 57,690.59, 79,582.16 and 39,794.45 is: 54,895.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,690.59 : 79,582.16 = 39,794.45 : x
  2. Step 2: Convert to fraction form
    57,690.59/79,582.16 = 39,794.45/x
  3. Step 3: Cross multiply
    57,690.59x = 79,582.16 × 39,794.45
  4. Step 4: Simplify right side
    57,690.59x = 3,166,927,988.59
  5. Step 5: Solve for x
    x = 3,166,927,988.59/57,690.59
  6. Step 6: Final answer
    x = 54,895.06

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Double scale
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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.