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Finding the Fourth Proportional to 52,671.86, 72,686.67 and 28,798.28

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Solution

The fourth proportional to 52,671.86, 72,686.67 and 28,798.28 is: 39,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,671.86 : 72,686.67 = 28,798.28 : x
  2. Step 2: Convert to fraction form
    52,671.86/72,686.67 = 28,798.28/x
  3. Step 3: Cross multiply
    52,671.86x = 72,686.67 × 28,798.28
  4. Step 4: Simplify right side
    52,671.86x = 2,093,251,074.93
  5. Step 5: Solve for x
    x = 2,093,251,074.93/52,671.86
  6. Step 6: Final answer
    x = 39,741.35

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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.