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Finding the Fourth Proportional to 93,142.88, 139,722.64 and 26,581.76

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Solution

The fourth proportional to 93,142.88, 139,722.64 and 26,581.76 is: 39,875.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,142.88 : 139,722.64 = 26,581.76 : x
  2. Step 2: Convert to fraction form
    93,142.88/139,722.64 = 26,581.76/x
  3. Step 3: Cross multiply
    93,142.88x = 139,722.64 × 26,581.76
  4. Step 4: Simplify right side
    93,142.88x = 3,714,073,683.05
  5. Step 5: Solve for x
    x = 3,714,073,683.05/93,142.88
  6. Step 6: Final answer
    x = 39,875.01

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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.