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Finding the Fourth Proportional to 18,483.68, 25,507.32 and 11,411.84

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Solution

The fourth proportional to 18,483.68, 25,507.32 and 11,411.84 is: 15,748.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.68 : 25,507.32 = 11,411.84 : x
  2. Step 2: Convert to fraction form
    18,483.68/25,507.32 = 11,411.84/x
  3. Step 3: Cross multiply
    18,483.68x = 25,507.32 × 11,411.84
  4. Step 4: Simplify right side
    18,483.68x = 291,085,454.67
  5. Step 5: Solve for x
    x = 291,085,454.67/18,483.68
  6. Step 6: Final answer
    x = 15,748.24

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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.