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Finding the Fourth Proportional to 43,698.64, 65,526.72 and 15,618.12

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Solution

The fourth proportional to 43,698.64, 65,526.72 and 15,618.12 is: 23,419.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,698.64 : 65,526.72 = 15,618.12 : x
  2. Step 2: Convert to fraction form
    43,698.64/65,526.72 = 15,618.12/x
  3. Step 3: Cross multiply
    43,698.64x = 65,526.72 × 15,618.12
  4. Step 4: Simplify right side
    43,698.64x = 1,023,404,176.17
  5. Step 5: Solve for x
    x = 1,023,404,176.17/43,698.64
  6. Step 6: Final answer
    x = 23,419.59

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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.