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Finding the Fourth Proportional to 93,139.70, 139,710.82 and 26,579.79

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Solution

The fourth proportional to 93,139.70, 139,710.82 and 26,579.79 is: 39,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,139.70 : 139,710.82 = 26,579.79 : x
  2. Step 2: Convert to fraction form
    93,139.70/139,710.82 = 26,579.79/x
  3. Step 3: Cross multiply
    93,139.70x = 139,710.82 × 26,579.79
  4. Step 4: Simplify right side
    93,139.70x = 3,713,484,256.33
  5. Step 5: Solve for x
    x = 3,713,484,256.33/93,139.70
  6. Step 6: Final answer
    x = 39,870.05

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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.