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Finding the Fourth Proportional to 65,663.10, 98,494.65 and 28,216.80

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Solution

The fourth proportional to 65,663.10, 98,494.65 and 28,216.80 is: 42,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,663.10 : 98,494.65 = 28,216.80 : x
  2. Step 2: Convert to fraction form
    65,663.10/98,494.65 = 28,216.80/x
  3. Step 3: Cross multiply
    65,663.10x = 98,494.65 × 28,216.80
  4. Step 4: Simplify right side
    65,663.10x = 2,779,203,840.12
  5. Step 5: Solve for x
    x = 2,779,203,840.12/65,663.10
  6. Step 6: Final answer
    x = 42,325.20

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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.