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Finding the Fourth Proportional to 153,000.86, 211,140.78 and 85,017.56

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Solution

The fourth proportional to 153,000.86, 211,140.78 and 85,017.56 is: 117,324.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,000.86 : 211,140.78 = 85,017.56 : x
  2. Step 2: Convert to fraction form
    153,000.86/211,140.78 = 85,017.56/x
  3. Step 3: Cross multiply
    153,000.86x = 211,140.78 × 85,017.56
  4. Step 4: Simplify right side
    153,000.86x = 17,950,673,932.10
  5. Step 5: Solve for x
    x = 17,950,673,932.10/153,000.86
  6. Step 6: Final answer
    x = 117,324.01

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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.