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Finding the Fourth Proportional to 68,927.36, 95,128.64 and 42,064.16

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Solution

The fourth proportional to 68,927.36, 95,128.64 and 42,064.16 is: 58,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,927.36 : 95,128.64 = 42,064.16 : x
  2. Step 2: Convert to fraction form
    68,927.36/95,128.64 = 42,064.16/x
  3. Step 3: Cross multiply
    68,927.36x = 95,128.64 × 42,064.16
  4. Step 4: Simplify right side
    68,927.36x = 4,001,506,333.54
  5. Step 5: Solve for x
    x = 4,001,506,333.54/68,927.36
  6. Step 6: Final answer
    x = 58,053.96

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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.