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Finding the Fourth Proportional to 113,533.76, 156,652.62 and 65,784.20

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Solution

The fourth proportional to 113,533.76, 156,652.62 and 65,784.20 is: 90,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,533.76 : 156,652.62 = 65,784.20 : x
  2. Step 2: Convert to fraction form
    113,533.76/156,652.62 = 65,784.20/x
  3. Step 3: Cross multiply
    113,533.76x = 156,652.62 × 65,784.20
  4. Step 4: Simplify right side
    113,533.76x = 10,305,267,284.60
  5. Step 5: Solve for x
    x = 10,305,267,284.60/113,533.76
  6. Step 6: Final answer
    x = 90,768.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.