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Finding the Fourth Proportional to 157,303.53, 217,079.46 and 85,682.88

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Solution

The fourth proportional to 157,303.53, 217,079.46 and 85,682.88 is: 118,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,303.53 : 217,079.46 = 85,682.88 : x
  2. Step 2: Convert to fraction form
    157,303.53/217,079.46 = 85,682.88/x
  3. Step 3: Cross multiply
    157,303.53x = 217,079.46 × 85,682.88
  4. Step 4: Simplify right side
    157,303.53x = 18,599,993,321.64
  5. Step 5: Solve for x
    x = 18,599,993,321.64/157,303.53
  6. Step 6: Final answer
    x = 118,242.70

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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.