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Finding the Fourth Proportional to 515,689.60, 711,505.60 and 334,408.80

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Solution

The fourth proportional to 515,689.60, 711,505.60 and 334,408.80 is: 461,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,689.60 : 711,505.60 = 334,408.80 : x
  2. Step 2: Convert to fraction form
    515,689.60/711,505.60 = 334,408.80/x
  3. Step 3: Cross multiply
    515,689.60x = 711,505.60 × 334,408.80
  4. Step 4: Simplify right side
    515,689.60x = 237,933,733,889.28
  5. Step 5: Solve for x
    x = 237,933,733,889.28/515,689.60
  6. Step 6: Final answer
    x = 461,389.44

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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.