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Finding the Fourth Proportional to 46,987.72, 70,474.72 and 13,698.84

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Solution

The fourth proportional to 46,987.72, 70,474.72 and 13,698.84 is: 20,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,987.72 : 70,474.72 = 13,698.84 : x
  2. Step 2: Convert to fraction form
    46,987.72/70,474.72 = 13,698.84/x
  3. Step 3: Cross multiply
    46,987.72x = 70,474.72 × 13,698.84
  4. Step 4: Simplify right side
    46,987.72x = 965,421,913.32
  5. Step 5: Solve for x
    x = 965,421,913.32/46,987.72
  6. Step 6: Final answer
    x = 20,546.26

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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.