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Finding the Fourth Proportional to 93,302.72, 139,856.88 and 40,698.08

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Solution

The fourth proportional to 93,302.72, 139,856.88 and 40,698.08 is: 61,004.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,302.72 : 139,856.88 = 40,698.08 : x
  2. Step 2: Convert to fraction form
    93,302.72/139,856.88 = 40,698.08/x
  3. Step 3: Cross multiply
    93,302.72x = 139,856.88 × 40,698.08
  4. Step 4: Simplify right side
    93,302.72x = 5,691,906,490.79
  5. Step 5: Solve for x
    x = 5,691,906,490.79/93,302.72
  6. Step 6: Final answer
    x = 61,004.72

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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.