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Finding the Fourth Proportional to 458,045.72, 686,957.88 and 192,005.40

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Solution

The fourth proportional to 458,045.72, 686,957.88 and 192,005.40 is: 287,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,045.72 : 686,957.88 = 192,005.40 : x
  2. Step 2: Convert to fraction form
    458,045.72/686,957.88 = 192,005.40/x
  3. Step 3: Cross multiply
    458,045.72x = 686,957.88 × 192,005.40
  4. Step 4: Simplify right side
    458,045.72x = 131,899,622,532.55
  5. Step 5: Solve for x
    x = 131,899,622,532.55/458,045.72
  6. Step 6: Final answer
    x = 287,961.70

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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.