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Finding the Fourth Proportional to 408,160.60, 612,281.22 and 127,683.16

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Solution

The fourth proportional to 408,160.60, 612,281.22 and 127,683.16 is: 191,537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,160.60 : 612,281.22 = 127,683.16 : x
  2. Step 2: Convert to fraction form
    408,160.60/612,281.22 = 127,683.16/x
  3. Step 3: Cross multiply
    408,160.60x = 612,281.22 × 127,683.16
  4. Step 4: Simplify right side
    408,160.60x = 78,178,000,978.26
  5. Step 5: Solve for x
    x = 78,178,000,978.26/408,160.60
  6. Step 6: Final answer
    x = 191,537.35

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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.