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Finding the Fourth Proportional to 6,472.61, 9,690.46 and 4,918.93

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Solution

The fourth proportional to 6,472.61, 9,690.46 and 4,918.93 is: 7,364.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.61 : 9,690.46 = 4,918.93 : x
  2. Step 2: Convert to fraction form
    6,472.61/9,690.46 = 4,918.93/x
  3. Step 3: Cross multiply
    6,472.61x = 9,690.46 × 4,918.93
  4. Step 4: Simplify right side
    6,472.61x = 47,666,671.72
  5. Step 5: Solve for x
    x = 47,666,671.72/6,472.61
  6. Step 6: Final answer
    x = 7,364.37

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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.