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Finding the Fourth Proportional to 55,482.61, 76,560.51 and 31,607.86

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Solution

The fourth proportional to 55,482.61, 76,560.51 and 31,607.86 is: 43,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,482.61 : 76,560.51 = 31,607.86 : x
  2. Step 2: Convert to fraction form
    55,482.61/76,560.51 = 31,607.86/x
  3. Step 3: Cross multiply
    55,482.61x = 76,560.51 × 31,607.86
  4. Step 4: Simplify right side
    55,482.61x = 2,419,913,881.61
  5. Step 5: Solve for x
    x = 2,419,913,881.61/55,482.61
  6. Step 6: Final answer
    x = 43,615.72

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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.