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Finding the Fourth Proportional to 65,905.59, 98,858.03 and 15,985.59

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Solution

The fourth proportional to 65,905.59, 98,858.03 and 15,985.59 is: 23,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,905.59 : 98,858.03 = 15,985.59 : x
  2. Step 2: Convert to fraction form
    65,905.59/98,858.03 = 15,985.59/x
  3. Step 3: Cross multiply
    65,905.59x = 98,858.03 × 15,985.59
  4. Step 4: Simplify right side
    65,905.59x = 1,580,303,855.86
  5. Step 5: Solve for x
    x = 1,580,303,855.86/65,905.59
  6. Step 6: Final answer
    x = 23,978.30

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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.