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Finding the Fourth Proportional to 103,664.90, 155,497.35 and 47,504.90

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Solution

The fourth proportional to 103,664.90, 155,497.35 and 47,504.90 is: 71,257.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,664.90 : 155,497.35 = 47,504.90 : x
  2. Step 2: Convert to fraction form
    103,664.90/155,497.35 = 47,504.90/x
  3. Step 3: Cross multiply
    103,664.90x = 155,497.35 × 47,504.90
  4. Step 4: Simplify right side
    103,664.90x = 7,386,886,062.02
  5. Step 5: Solve for x
    x = 7,386,886,062.02/103,664.90
  6. Step 6: Final answer
    x = 71,257.35

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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.