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Finding the Fourth Proportional to 46,759.28, 70,128.60 and 13,472

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Solution

The fourth proportional to 46,759.28, 70,128.60 and 13,472 is: 20,205.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,759.28 : 70,128.60 = 13,472 : x
  2. Step 2: Convert to fraction form
    46,759.28/70,128.60 = 13,472/x
  3. Step 3: Cross multiply
    46,759.28x = 70,128.60 × 13,472
  4. Step 4: Simplify right side
    46,759.28x = 944,772,499.20
  5. Step 5: Solve for x
    x = 944,772,499.20/46,759.28
  6. Step 6: Final answer
    x = 20,205.03

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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.