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Finding the Fourth Proportional to 25,477.80, 38,216.70 and 7,009.80

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Solution

The fourth proportional to 25,477.80, 38,216.70 and 7,009.80 is: 10,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,477.80 : 38,216.70 = 7,009.80 : x
  2. Step 2: Convert to fraction form
    25,477.80/38,216.70 = 7,009.80/x
  3. Step 3: Cross multiply
    25,477.80x = 38,216.70 × 7,009.80
  4. Step 4: Simplify right side
    25,477.80x = 267,891,423.66
  5. Step 5: Solve for x
    x = 267,891,423.66/25,477.80
  6. Step 6: Final answer
    x = 10,514.70

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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.