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Finding the Fourth Proportional to 4,916.88, 7,342.74 and 4,320.72

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Solution

The fourth proportional to 4,916.88, 7,342.74 and 4,320.72 is: 6,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,916.88 : 7,342.74 = 4,320.72 : x
  2. Step 2: Convert to fraction form
    4,916.88/7,342.74 = 4,320.72/x
  3. Step 3: Cross multiply
    4,916.88x = 7,342.74 × 4,320.72
  4. Step 4: Simplify right side
    4,916.88x = 31,725,923.57
  5. Step 5: Solve for x
    x = 31,725,923.57/4,916.88
  6. Step 6: Final answer
    x = 6,452.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.