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Finding the Fourth Proportional to 153,037.69, 211,189.13 and 85,053.85

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Solution

The fourth proportional to 153,037.69, 211,189.13 and 85,053.85 is: 117,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,037.69 : 211,189.13 = 85,053.85 : x
  2. Step 2: Convert to fraction form
    153,037.69/211,189.13 = 85,053.85/x
  3. Step 3: Cross multiply
    153,037.69x = 211,189.13 × 85,053.85
  4. Step 4: Simplify right side
    153,037.69x = 17,962,448,159.38
  5. Step 5: Solve for x
    x = 17,962,448,159.38/153,037.69
  6. Step 6: Final answer
    x = 117,372.71

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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.