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Finding the Fourth Proportional to 113,004.72, 155,944.44 and 62,702.64

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Solution

The fourth proportional to 113,004.72, 155,944.44 and 62,702.64 is: 86,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,004.72 : 155,944.44 = 62,702.64 : x
  2. Step 2: Convert to fraction form
    113,004.72/155,944.44 = 62,702.64/x
  3. Step 3: Cross multiply
    113,004.72x = 155,944.44 × 62,702.64
  4. Step 4: Simplify right side
    113,004.72x = 9,778,128,081.32
  5. Step 5: Solve for x
    x = 9,778,128,081.32/113,004.72
  6. Step 6: Final answer
    x = 86,528.49

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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.