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Finding the Fourth Proportional to 157,226.01, 216,969.72 and 85,606.03

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Solution

The fourth proportional to 157,226.01, 216,969.72 and 85,606.03 is: 118,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,226.01 : 216,969.72 = 85,606.03 : x
  2. Step 2: Convert to fraction form
    157,226.01/216,969.72 = 85,606.03/x
  3. Step 3: Cross multiply
    157,226.01x = 216,969.72 × 85,606.03
  4. Step 4: Simplify right side
    157,226.01x = 18,573,916,309.60
  5. Step 5: Solve for x
    x = 18,573,916,309.60/157,226.01
  6. Step 6: Final answer
    x = 118,135.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.