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Finding the Fourth Proportional to 93,102.76, 139,571.08 and 77,436.32

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Solution

The fourth proportional to 93,102.76, 139,571.08 and 77,436.32 is: 116,085.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,102.76 : 139,571.08 = 77,436.32 : x
  2. Step 2: Convert to fraction form
    93,102.76/139,571.08 = 77,436.32/x
  3. Step 3: Cross multiply
    93,102.76x = 139,571.08 × 77,436.32
  4. Step 4: Simplify right side
    93,102.76x = 10,807,870,115.77
  5. Step 5: Solve for x
    x = 10,807,870,115.77/93,102.76
  6. Step 6: Final answer
    x = 116,085.39

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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.