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Finding the Fourth Proportional to 153,170.53, 211,373.45 and 86,102.53

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Solution

The fourth proportional to 153,170.53, 211,373.45 and 86,102.53 is: 118,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,170.53 : 211,373.45 = 86,102.53 : x
  2. Step 2: Convert to fraction form
    153,170.53/211,373.45 = 86,102.53/x
  3. Step 3: Cross multiply
    153,170.53x = 211,373.45 × 86,102.53
  4. Step 4: Simplify right side
    153,170.53x = 18,199,788,183.77
  5. Step 5: Solve for x
    x = 18,199,788,183.77/153,170.53
  6. Step 6: Final answer
    x = 118,820.43

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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.