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Finding the Fourth Proportional to 101,928.90, 152,893.35 and 86,838.60

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Solution

The fourth proportional to 101,928.90, 152,893.35 and 86,838.60 is: 130,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,928.90 : 152,893.35 = 86,838.60 : x
  2. Step 2: Convert to fraction form
    101,928.90/152,893.35 = 86,838.60/x
  3. Step 3: Cross multiply
    101,928.90x = 152,893.35 × 86,838.60
  4. Step 4: Simplify right side
    101,928.90x = 13,277,044,463.31
  5. Step 5: Solve for x
    x = 13,277,044,463.31/101,928.90
  6. Step 6: Final answer
    x = 130,257.90

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1.5x scale

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.