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Finding the Fourth Proportional to 153,361.99, 211,644.23 and 83,515.89

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Solution

The fourth proportional to 153,361.99, 211,644.23 and 83,515.89 is: 115,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,361.99 : 211,644.23 = 83,515.89 : x
  2. Step 2: Convert to fraction form
    153,361.99/211,644.23 = 83,515.89/x
  3. Step 3: Cross multiply
    153,361.99x = 211,644.23 × 83,515.89
  4. Step 4: Simplify right side
    153,361.99x = 17,675,656,607.90
  5. Step 5: Solve for x
    x = 17,675,656,607.90/153,361.99
  6. Step 6: Final answer
    x = 115,254.48

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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.