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Finding the Fourth Proportional to 153,194.40, 211,405.22 and 85,209.93

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Solution

The fourth proportional to 153,194.40, 211,405.22 and 85,209.93 is: 117,588.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,194.40 : 211,405.22 = 85,209.93 : x
  2. Step 2: Convert to fraction form
    153,194.40/211,405.22 = 85,209.93/x
  3. Step 3: Cross multiply
    153,194.40x = 211,405.22 × 85,209.93
  4. Step 4: Simplify right side
    153,194.40x = 18,013,823,571.78
  5. Step 5: Solve for x
    x = 18,013,823,571.78/153,194.40
  6. Step 6: Final answer
    x = 117,588.00

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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.