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Finding the Fourth Proportional to 93,328.80, 139,894.16 and 45,876.97

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Solution

The fourth proportional to 93,328.80, 139,894.16 and 45,876.97 is: 68,766.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,328.80 : 139,894.16 = 45,876.97 : x
  2. Step 2: Convert to fraction form
    93,328.80/139,894.16 = 45,876.97/x
  3. Step 3: Cross multiply
    93,328.80x = 139,894.16 × 45,876.97
  4. Step 4: Simplify right side
    93,328.80x = 6,417,920,181.50
  5. Step 5: Solve for x
    x = 6,417,920,181.50/93,328.80
  6. Step 6: Final answer
    x = 68,766.77

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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.