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Finding the Fourth Proportional to 57,430.01, 86,145.01 and 17,990.19

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Solution

The fourth proportional to 57,430.01, 86,145.01 and 17,990.19 is: 26,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.01 : 86,145.01 = 17,990.19 : x
  2. Step 2: Convert to fraction form
    57,430.01/86,145.01 = 17,990.19/x
  3. Step 3: Cross multiply
    57,430.01x = 86,145.01 × 17,990.19
  4. Step 4: Simplify right side
    57,430.01x = 1,549,765,097.45
  5. Step 5: Solve for x
    x = 1,549,765,097.45/57,430.01
  6. Step 6: Final answer
    x = 26,985.29

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.