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Finding the Fourth Proportional to 201,710.79, 278,349.75 and 111,063.15

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Solution

The fourth proportional to 201,710.79, 278,349.75 and 111,063.15 is: 153,261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,710.79 : 278,349.75 = 111,063.15 : x
  2. Step 2: Convert to fraction form
    201,710.79/278,349.75 = 111,063.15/x
  3. Step 3: Cross multiply
    201,710.79x = 278,349.75 × 111,063.15
  4. Step 4: Simplify right side
    201,710.79x = 30,914,400,036.71
  5. Step 5: Solve for x
    x = 30,914,400,036.71/201,710.79
  6. Step 6: Final answer
    x = 153,261.01

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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.