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Finding the Fourth Proportional to 621,100.34, 857,059.38 and 363,037.78

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Solution

The fourth proportional to 621,100.34, 857,059.38 and 363,037.78 is: 500,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,100.34 : 857,059.38 = 363,037.78 : x
  2. Step 2: Convert to fraction form
    621,100.34/857,059.38 = 363,037.78/x
  3. Step 3: Cross multiply
    621,100.34x = 857,059.38 × 363,037.78
  4. Step 4: Simplify right side
    621,100.34x = 311,144,934,643.38
  5. Step 5: Solve for x
    x = 311,144,934,643.38/621,100.34
  6. Step 6: Final answer
    x = 500,957.60

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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.