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Finding the Fourth Proportional to 25,812.40, 36,189.20 and 25,812.40

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Solution

The fourth proportional to 25,812.40, 36,189.20 and 25,812.40 is: 36,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,812.40 : 36,189.20 = 25,812.40 : x
  2. Step 2: Convert to fraction form
    25,812.40/36,189.20 = 25,812.40/x
  3. Step 3: Cross multiply
    25,812.40x = 36,189.20 × 25,812.40
  4. Step 4: Simplify right side
    25,812.40x = 934,130,106.08
  5. Step 5: Solve for x
    x = 934,130,106.08/25,812.40
  6. Step 6: Final answer
    x = 36,189.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.