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Finding the Fourth Proportional to 201,486.66, 278,062.66 and 116,631.06

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Solution

The fourth proportional to 201,486.66, 278,062.66 and 116,631.06 is: 160,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,486.66 : 278,062.66 = 116,631.06 : x
  2. Step 2: Convert to fraction form
    201,486.66/278,062.66 = 116,631.06/x
  3. Step 3: Cross multiply
    201,486.66x = 278,062.66 × 116,631.06
  4. Step 4: Simplify right side
    201,486.66x = 32,430,742,782.22
  5. Step 5: Solve for x
    x = 32,430,742,782.22/201,486.66
  6. Step 6: Final answer
    x = 160,957.27

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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.