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Finding the Fourth Proportional to 93,145.51, 139,718.31 and 30,816.01

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Solution

The fourth proportional to 93,145.51, 139,718.31 and 30,816.01 is: 46,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,145.51 : 139,718.31 = 30,816.01 : x
  2. Step 2: Convert to fraction form
    93,145.51/139,718.31 = 30,816.01/x
  3. Step 3: Cross multiply
    93,145.51x = 139,718.31 × 30,816.01
  4. Step 4: Simplify right side
    93,145.51x = 4,305,560,838.14
  5. Step 5: Solve for x
    x = 4,305,560,838.14/93,145.51
  6. Step 6: Final answer
    x = 46,224.03

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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.