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Finding the Fourth Proportional to 474,866.87, 655,256.24 and 378,315.60

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Solution

The fourth proportional to 474,866.87, 655,256.24 and 378,315.60 is: 522,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,866.87 : 655,256.24 = 378,315.60 : x
  2. Step 2: Convert to fraction form
    474,866.87/655,256.24 = 378,315.60/x
  3. Step 3: Cross multiply
    474,866.87x = 655,256.24 × 378,315.60
  4. Step 4: Simplify right side
    474,866.87x = 247,893,655,697.77
  5. Step 5: Solve for x
    x = 247,893,655,697.77/474,866.87
  6. Step 6: Final answer
    x = 522,027.70

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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.