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Finding the Fourth Proportional to 215,390.16, 322,991.37 and 65,595.24

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Solution

The fourth proportional to 215,390.16, 322,991.37 and 65,595.24 is: 98,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,390.16 : 322,991.37 = 65,595.24 : x
  2. Step 2: Convert to fraction form
    215,390.16/322,991.37 = 65,595.24/x
  3. Step 3: Cross multiply
    215,390.16x = 322,991.37 × 65,595.24
  4. Step 4: Simplify right side
    215,390.16x = 21,186,696,433.08
  5. Step 5: Solve for x
    x = 21,186,696,433.08/215,390.16
  6. Step 6: Final answer
    x = 98,364.27

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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.