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Finding the Fourth Proportional to 153,694.01, 212,097.33 and 85,711.07

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Solution

The fourth proportional to 153,694.01, 212,097.33 and 85,711.07 is: 118,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,694.01 : 212,097.33 = 85,711.07 : x
  2. Step 2: Convert to fraction form
    153,694.01/212,097.33 = 85,711.07/x
  3. Step 3: Cross multiply
    153,694.01x = 212,097.33 × 85,711.07
  4. Step 4: Simplify right side
    153,694.01x = 18,179,089,098.44
  5. Step 5: Solve for x
    x = 18,179,089,098.44/153,694.01
  6. Step 6: Final answer
    x = 118,281.05

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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.