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Finding the Fourth Proportional to 153,156.65, 211,209.53 and 91,893.30

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Solution

The fourth proportional to 153,156.65, 211,209.53 and 91,893.30 is: 126,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,156.65 : 211,209.53 = 91,893.30 : x
  2. Step 2: Convert to fraction form
    153,156.65/211,209.53 = 91,893.30/x
  3. Step 3: Cross multiply
    153,156.65x = 211,209.53 × 91,893.30
  4. Step 4: Simplify right side
    153,156.65x = 19,408,740,243.68
  5. Step 5: Solve for x
    x = 19,408,740,243.68/153,156.65
  6. Step 6: Final answer
    x = 126,724.77

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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.