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Finding the Fourth Proportional to 93,644.72, 140,437.80 and 31,300.64

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Solution

The fourth proportional to 93,644.72, 140,437.80 and 31,300.64 is: 46,941.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,644.72 : 140,437.80 = 31,300.64 : x
  2. Step 2: Convert to fraction form
    93,644.72/140,437.80 = 31,300.64/x
  3. Step 3: Cross multiply
    93,644.72x = 140,437.80 × 31,300.64
  4. Step 4: Simplify right side
    93,644.72x = 4,395,793,020.19
  5. Step 5: Solve for x
    x = 4,395,793,020.19/93,644.72
  6. Step 6: Final answer
    x = 46,941.17

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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.