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Finding the Fourth Proportional to 18,275.01, 25,219.62 and 9,891.51

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Solution

The fourth proportional to 18,275.01, 25,219.62 and 9,891.51 is: 13,650.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.01 : 25,219.62 = 9,891.51 : x
  2. Step 2: Convert to fraction form
    18,275.01/25,219.62 = 9,891.51/x
  3. Step 3: Cross multiply
    18,275.01x = 25,219.62 × 9,891.51
  4. Step 4: Simplify right side
    18,275.01x = 249,460,123.43
  5. Step 5: Solve for x
    x = 249,460,123.43/18,275.01
  6. Step 6: Final answer
    x = 13,650.34

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Half scale
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Double scale
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Similar ratio
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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.