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Finding the Fourth Proportional to 46,810.20, 70,215.30 and 18,743.70

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Solution

The fourth proportional to 46,810.20, 70,215.30 and 18,743.70 is: 28,115.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,810.20 : 70,215.30 = 18,743.70 : x
  2. Step 2: Convert to fraction form
    46,810.20/70,215.30 = 18,743.70/x
  3. Step 3: Cross multiply
    46,810.20x = 70,215.30 × 18,743.70
  4. Step 4: Simplify right side
    46,810.20x = 1,316,094,518.61
  5. Step 5: Solve for x
    x = 1,316,094,518.61/46,810.20
  6. Step 6: Final answer
    x = 28,115.55

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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.