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Finding the Fourth Proportional to 5,657.01, 7,807.04 and 3,139.35

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Solution

The fourth proportional to 5,657.01, 7,807.04 and 3,139.35 is: 4,332.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.01 : 7,807.04 = 3,139.35 : x
  2. Step 2: Convert to fraction form
    5,657.01/7,807.04 = 3,139.35/x
  3. Step 3: Cross multiply
    5,657.01x = 7,807.04 × 3,139.35
  4. Step 4: Simplify right side
    5,657.01x = 24,509,031.02
  5. Step 5: Solve for x
    x = 24,509,031.02/5,657.01
  6. Step 6: Final answer
    x = 4,332.51

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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.