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Finding the Fourth Proportional to 153,314.94, 211,572.49 and 85,331.93

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Solution

The fourth proportional to 153,314.94, 211,572.49 and 85,331.93 is: 117,756.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,314.94 : 211,572.49 = 85,331.93 : x
  2. Step 2: Convert to fraction form
    153,314.94/211,572.49 = 85,331.93/x
  3. Step 3: Cross multiply
    153,314.94x = 211,572.49 × 85,331.93
  4. Step 4: Simplify right side
    153,314.94x = 18,053,888,906.61
  5. Step 5: Solve for x
    x = 18,053,888,906.61/153,314.94
  6. Step 6: Final answer
    x = 117,756.88

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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.