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Finding the Fourth Proportional to 153,245.58, 211,476.87 and 86,177.58

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Solution

The fourth proportional to 153,245.58, 211,476.87 and 86,177.58 is: 118,923.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,245.58 : 211,476.87 = 86,177.58 : x
  2. Step 2: Convert to fraction form
    153,245.58/211,476.87 = 86,177.58/x
  3. Step 3: Cross multiply
    153,245.58x = 211,476.87 × 86,177.58
  4. Step 4: Simplify right side
    153,245.58x = 18,224,564,882.57
  5. Step 5: Solve for x
    x = 18,224,564,882.57/153,245.58
  6. Step 6: Final answer
    x = 118,923.92

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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.