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Finding the Fourth Proportional to 74,838.90, 103,295.42 and 43,026.28

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Solution

The fourth proportional to 74,838.90, 103,295.42 and 43,026.28 is: 59,386.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,838.90 : 103,295.42 = 43,026.28 : x
  2. Step 2: Convert to fraction form
    74,838.90/103,295.42 = 43,026.28/x
  3. Step 3: Cross multiply
    74,838.90x = 103,295.42 × 43,026.28
  4. Step 4: Simplify right side
    74,838.90x = 4,444,417,663.64
  5. Step 5: Solve for x
    x = 4,444,417,663.64/74,838.90
  6. Step 6: Final answer
    x = 59,386.46

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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.