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Finding the Fourth Proportional to 623,371.86, 860,253.42 and 355,099.86

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Solution

The fourth proportional to 623,371.86, 860,253.42 and 355,099.86 is: 490,037.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,371.86 : 860,253.42 = 355,099.86 : x
  2. Step 2: Convert to fraction form
    623,371.86/860,253.42 = 355,099.86/x
  3. Step 3: Cross multiply
    623,371.86x = 860,253.42 × 355,099.86
  4. Step 4: Simplify right side
    623,371.86x = 305,475,869,006.52
  5. Step 5: Solve for x
    x = 305,475,869,006.52/623,371.86
  6. Step 6: Final answer
    x = 490,037.95

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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.