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Finding the Fourth Proportional to 153,016.80, 211,164.35 and 85,040.15

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Solution

The fourth proportional to 153,016.80, 211,164.35 and 85,040.15 is: 117,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,016.80 : 211,164.35 = 85,040.15 : x
  2. Step 2: Convert to fraction form
    153,016.80/211,164.35 = 85,040.15/x
  3. Step 3: Cross multiply
    153,016.80x = 211,164.35 × 85,040.15
  4. Step 4: Simplify right side
    153,016.80x = 17,957,448,475.21
  5. Step 5: Solve for x
    x = 17,957,448,475.21/153,016.80
  6. Step 6: Final answer
    x = 117,356.06

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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.