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Finding the Fourth Proportional to 46,987.40, 70,480.18 and 11,448.92

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Solution

The fourth proportional to 46,987.40, 70,480.18 and 11,448.92 is: 17,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,987.40 : 70,480.18 = 11,448.92 : x
  2. Step 2: Convert to fraction form
    46,987.40/70,480.18 = 11,448.92/x
  3. Step 3: Cross multiply
    46,987.40x = 70,480.18 × 11,448.92
  4. Step 4: Simplify right side
    46,987.40x = 806,921,942.41
  5. Step 5: Solve for x
    x = 806,921,942.41/46,987.40
  6. Step 6: Final answer
    x = 17,173.16

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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.