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Finding the Fourth Proportional to 349,689.60, 524,793.60 and 256,377.60

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Solution

The fourth proportional to 349,689.60, 524,793.60 and 256,377.60 is: 384,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,689.60 : 524,793.60 = 256,377.60 : x
  2. Step 2: Convert to fraction form
    349,689.60/524,793.60 = 256,377.60/x
  3. Step 3: Cross multiply
    349,689.60x = 524,793.60 × 256,377.60
  4. Step 4: Simplify right side
    349,689.60x = 134,545,323,663.36
  5. Step 5: Solve for x
    x = 134,545,323,663.36/349,689.60
  6. Step 6: Final answer
    x = 384,756.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.