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Finding the Fourth Proportional to 636,793.63, 878,695.15 and 430,510.60

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Solution

The fourth proportional to 636,793.63, 878,695.15 and 430,510.60 is: 594,050.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,793.63 : 878,695.15 = 430,510.60 : x
  2. Step 2: Convert to fraction form
    636,793.63/878,695.15 = 430,510.60/x
  3. Step 3: Cross multiply
    636,793.63x = 878,695.15 × 430,510.60
  4. Step 4: Simplify right side
    636,793.63x = 378,287,576,243.59
  5. Step 5: Solve for x
    x = 378,287,576,243.59/636,793.63
  6. Step 6: Final answer
    x = 594,050.50

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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.