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Finding the Fourth Proportional to 308,784.50, 426,134.13 and 174,645.62

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Solution

The fourth proportional to 308,784.50, 426,134.13 and 174,645.62 is: 241,017.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,784.50 : 426,134.13 = 174,645.62 : x
  2. Step 2: Convert to fraction form
    308,784.50/426,134.13 = 174,645.62/x
  3. Step 3: Cross multiply
    308,784.50x = 426,134.13 × 174,645.62
  4. Step 4: Simplify right side
    308,784.50x = 74,422,459,337.01
  5. Step 5: Solve for x
    x = 74,422,459,337.01/308,784.50
  6. Step 6: Final answer
    x = 241,017.47

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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.