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Finding the Fourth Proportional to 131,425.60, 197,167.20 and 64,897.60

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Solution

The fourth proportional to 131,425.60, 197,167.20 and 64,897.60 is: 97,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,425.60 : 197,167.20 = 64,897.60 : x
  2. Step 2: Convert to fraction form
    131,425.60/197,167.20 = 64,897.60/x
  3. Step 3: Cross multiply
    131,425.60x = 197,167.20 × 64,897.60
  4. Step 4: Simplify right side
    131,425.60x = 12,795,678,078.72
  5. Step 5: Solve for x
    x = 12,795,678,078.72/131,425.60
  6. Step 6: Final answer
    x = 97,360.62

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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.