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Finding the Fourth Proportional to 52,866.48, 72,955.76 and 28,993.66

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Solution

The fourth proportional to 52,866.48, 72,955.76 and 28,993.66 is: 40,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,866.48 : 72,955.76 = 28,993.66 : x
  2. Step 2: Convert to fraction form
    52,866.48/72,955.76 = 28,993.66/x
  3. Step 3: Cross multiply
    52,866.48x = 72,955.76 × 28,993.66
  4. Step 4: Simplify right side
    52,866.48x = 2,115,254,173.12
  5. Step 5: Solve for x
    x = 2,115,254,173.12/52,866.48
  6. Step 6: Final answer
    x = 40,011.25

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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.