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Finding the Fourth Proportional to 465,542.80, 698,300.39 and 128,603.72

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Solution

The fourth proportional to 465,542.80, 698,300.39 and 128,603.72 is: 192,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,542.80 : 698,300.39 = 128,603.72 : x
  2. Step 2: Convert to fraction form
    465,542.80/698,300.39 = 128,603.72/x
  3. Step 3: Cross multiply
    465,542.80x = 698,300.39 × 128,603.72
  4. Step 4: Simplify right side
    465,542.80x = 89,804,029,898.71
  5. Step 5: Solve for x
    x = 89,804,029,898.71/465,542.80
  6. Step 6: Final answer
    x = 192,901.77

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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.