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Finding the Fourth Proportional to 64,868.30, 89,518.21 and 35,060.30

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Solution

The fourth proportional to 64,868.30, 89,518.21 and 35,060.30 is: 48,383.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.30 : 89,518.21 = 35,060.30 : x
  2. Step 2: Convert to fraction form
    64,868.30/89,518.21 = 35,060.30/x
  3. Step 3: Cross multiply
    64,868.30x = 89,518.21 × 35,060.30
  4. Step 4: Simplify right side
    64,868.30x = 3,138,535,298.06
  5. Step 5: Solve for x
    x = 3,138,535,298.06/64,868.30
  6. Step 6: Final answer
    x = 48,383.19

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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.