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Finding the Fourth Proportional to 91,808.70, 137,713.05 and 25,259.10

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Solution

The fourth proportional to 91,808.70, 137,713.05 and 25,259.10 is: 37,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808.70 : 137,713.05 = 25,259.10 : x
  2. Step 2: Convert to fraction form
    91,808.70/137,713.05 = 25,259.10/x
  3. Step 3: Cross multiply
    91,808.70x = 137,713.05 × 25,259.10
  4. Step 4: Simplify right side
    91,808.70x = 3,478,507,701.26
  5. Step 5: Solve for x
    x = 3,478,507,701.26/91,808.70
  6. Step 6: Final answer
    x = 37,888.65

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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.