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Finding the Fourth Proportional to 607,890.90, 911,836.35 and 164,658.90

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Solution

The fourth proportional to 607,890.90, 911,836.35 and 164,658.90 is: 246,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,890.90 : 911,836.35 = 164,658.90 : x
  2. Step 2: Convert to fraction form
    607,890.90/911,836.35 = 164,658.90/x
  3. Step 3: Cross multiply
    607,890.90x = 911,836.35 × 164,658.90
  4. Step 4: Simplify right side
    607,890.90x = 150,141,970,371.02
  5. Step 5: Solve for x
    x = 150,141,970,371.02/607,890.90
  6. Step 6: Final answer
    x = 246,988.35

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Double scale
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Similar ratio
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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.