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Finding the Fourth Proportional to 68,980.48, 103,462.08 and 57,368.32

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Solution

The fourth proportional to 68,980.48, 103,462.08 and 57,368.32 is: 86,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.48 : 103,462.08 = 57,368.32 : x
  2. Step 2: Convert to fraction form
    68,980.48/103,462.08 = 57,368.32/x
  3. Step 3: Cross multiply
    68,980.48x = 103,462.08 × 57,368.32
  4. Step 4: Simplify right side
    68,980.48x = 5,935,445,713.31
  5. Step 5: Solve for x
    x = 5,935,445,713.31/68,980.48
  6. Step 6: Final answer
    x = 86,045.29

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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.