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Finding the Fourth Proportional to 53,168.90, 73,373.38 and 28,970.15

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Solution

The fourth proportional to 53,168.90, 73,373.38 and 28,970.15 is: 39,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,168.90 : 73,373.38 = 28,970.15 : x
  2. Step 2: Convert to fraction form
    53,168.90/73,373.38 = 28,970.15/x
  3. Step 3: Cross multiply
    53,168.90x = 73,373.38 × 28,970.15
  4. Step 4: Simplify right side
    53,168.90x = 2,125,637,590.68
  5. Step 5: Solve for x
    x = 2,125,637,590.68/53,168.90
  6. Step 6: Final answer
    x = 39,978.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.