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Finding the Fourth Proportional to 85,237.60, 127,856.40 and 64,501.60

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Solution

The fourth proportional to 85,237.60, 127,856.40 and 64,501.60 is: 96,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,237.60 : 127,856.40 = 64,501.60 : x
  2. Step 2: Convert to fraction form
    85,237.60/127,856.40 = 64,501.60/x
  3. Step 3: Cross multiply
    85,237.60x = 127,856.40 × 64,501.60
  4. Step 4: Simplify right side
    85,237.60x = 8,246,942,370.24
  5. Step 5: Solve for x
    x = 8,246,942,370.24/85,237.60
  6. Step 6: Final answer
    x = 96,752.40

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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.