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Finding the Fourth Proportional to 57,616.80, 79,547.88 and 47,031.60

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Solution

The fourth proportional to 57,616.80, 79,547.88 and 47,031.60 is: 64,933.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,616.80 : 79,547.88 = 47,031.60 : x
  2. Step 2: Convert to fraction form
    57,616.80/79,547.88 = 47,031.60/x
  3. Step 3: Cross multiply
    57,616.80x = 79,547.88 × 47,031.60
  4. Step 4: Simplify right side
    57,616.80x = 3,741,264,073.01
  5. Step 5: Solve for x
    x = 3,741,264,073.01/57,616.80
  6. Step 6: Final answer
    x = 64,933.56

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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.