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Finding the Fourth Proportional to 191,487.20, 287,243.60 and 65,125.60

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Solution

The fourth proportional to 191,487.20, 287,243.60 and 65,125.60 is: 97,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,487.20 : 287,243.60 = 65,125.60 : x
  2. Step 2: Convert to fraction form
    191,487.20/287,243.60 = 65,125.60/x
  3. Step 3: Cross multiply
    191,487.20x = 287,243.60 × 65,125.60
  4. Step 4: Simplify right side
    191,487.20x = 18,706,911,796.16
  5. Step 5: Solve for x
    x = 18,706,911,796.16/191,487.20
  6. Step 6: Final answer
    x = 97,692.75

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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.