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Finding the Fourth Proportional to 18,130.96, 25,020.34 and 10,064.15

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Solution

The fourth proportional to 18,130.96, 25,020.34 and 10,064.15 is: 13,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.96 : 25,020.34 = 10,064.15 : x
  2. Step 2: Convert to fraction form
    18,130.96/25,020.34 = 10,064.15/x
  3. Step 3: Cross multiply
    18,130.96x = 25,020.34 × 10,064.15
  4. Step 4: Simplify right side
    18,130.96x = 251,808,454.81
  5. Step 5: Solve for x
    x = 251,808,454.81/18,130.96
  6. Step 6: Final answer
    x = 13,888.31

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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.