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Finding the Fourth Proportional to 127,603.34, 191,405.08 and 57,400.64

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Solution

The fourth proportional to 127,603.34, 191,405.08 and 57,400.64 is: 86,100.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,603.34 : 191,405.08 = 57,400.64 : x
  2. Step 2: Convert to fraction form
    127,603.34/191,405.08 = 57,400.64/x
  3. Step 3: Cross multiply
    127,603.34x = 191,405.08 × 57,400.64
  4. Step 4: Simplify right side
    127,603.34x = 10,986,774,091.25
  5. Step 5: Solve for x
    x = 10,986,774,091.25/127,603.34
  6. Step 6: Final answer
    x = 86,100.99

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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.