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Finding the Fourth Proportional to 153,202.92, 211,419.50 and 86,134.92

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Solution

The fourth proportional to 153,202.92, 211,419.50 and 86,134.92 is: 118,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,202.92 : 211,419.50 = 86,134.92 : x
  2. Step 2: Convert to fraction form
    153,202.92/211,419.50 = 86,134.92/x
  3. Step 3: Cross multiply
    153,202.92x = 211,419.50 × 86,134.92
  4. Step 4: Simplify right side
    153,202.92x = 18,210,601,718.94
  5. Step 5: Solve for x
    x = 18,210,601,718.94/153,202.92
  6. Step 6: Final answer
    x = 118,865.89

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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.