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Finding the Fourth Proportional to 92,890.90, 139,346.43 and 29,696.32

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Solution

The fourth proportional to 92,890.90, 139,346.43 and 29,696.32 is: 44,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,890.90 : 139,346.43 = 29,696.32 : x
  2. Step 2: Convert to fraction form
    92,890.90/139,346.43 = 29,696.32/x
  3. Step 3: Cross multiply
    92,890.90x = 139,346.43 × 29,696.32
  4. Step 4: Simplify right side
    92,890.90x = 4,138,076,176.14
  5. Step 5: Solve for x
    x = 4,138,076,176.14/92,890.90
  6. Step 6: Final answer
    x = 44,547.70

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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.