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Finding the Fourth Proportional to 56,955.42, 85,485.17 and 28,894.79

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Solution

The fourth proportional to 56,955.42, 85,485.17 and 28,894.79 is: 43,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,955.42 : 85,485.17 = 28,894.79 : x
  2. Step 2: Convert to fraction form
    56,955.42/85,485.17 = 28,894.79/x
  3. Step 3: Cross multiply
    56,955.42x = 85,485.17 × 28,894.79
  4. Step 4: Simplify right side
    56,955.42x = 2,470,076,321.21
  5. Step 5: Solve for x
    x = 2,470,076,321.21/56,955.42
  6. Step 6: Final answer
    x = 43,368.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.