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Finding the Fourth Proportional to 52,480.66, 72,430.86 and 31,260.28

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Solution

The fourth proportional to 52,480.66, 72,430.86 and 31,260.28 is: 43,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,480.66 : 72,430.86 = 31,260.28 : x
  2. Step 2: Convert to fraction form
    52,480.66/72,430.86 = 31,260.28/x
  3. Step 3: Cross multiply
    52,480.66x = 72,430.86 × 31,260.28
  4. Step 4: Simplify right side
    52,480.66x = 2,264,208,964.24
  5. Step 5: Solve for x
    x = 2,264,208,964.24/52,480.66
  6. Step 6: Final answer
    x = 43,143.68

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Why These Related Problems?

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