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Finding the Fourth Proportional to 55,887.66, 77,124.59 and 31,693.20

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Solution

The fourth proportional to 55,887.66, 77,124.59 and 31,693.20 is: 43,736.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,887.66 : 77,124.59 = 31,693.20 : x
  2. Step 2: Convert to fraction form
    55,887.66/77,124.59 = 31,693.20/x
  3. Step 3: Cross multiply
    55,887.66x = 77,124.59 × 31,693.20
  4. Step 4: Simplify right side
    55,887.66x = 2,444,324,726.95
  5. Step 5: Solve for x
    x = 2,444,324,726.95/55,887.66
  6. Step 6: Final answer
    x = 43,736.39

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1.5x scale

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.