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Finding the Fourth Proportional to 61,977.04, 85,509.32 and 35,115.28

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Solution

The fourth proportional to 61,977.04, 85,509.32 and 35,115.28 is: 48,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,977.04 : 85,509.32 = 35,115.28 : x
  2. Step 2: Convert to fraction form
    61,977.04/85,509.32 = 35,115.28/x
  3. Step 3: Cross multiply
    61,977.04x = 85,509.32 × 35,115.28
  4. Step 4: Simplify right side
    61,977.04x = 3,002,683,714.41
  5. Step 5: Solve for x
    x = 3,002,683,714.41/61,977.04
  6. Step 6: Final answer
    x = 48,448.32

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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.