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Finding the Fourth Proportional to 12,698.94, 19,045.53 and 4,490.94

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Solution

The fourth proportional to 12,698.94, 19,045.53 and 4,490.94 is: 6,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.94 : 19,045.53 = 4,490.94 : x
  2. Step 2: Convert to fraction form
    12,698.94/19,045.53 = 4,490.94/x
  3. Step 3: Cross multiply
    12,698.94x = 19,045.53 × 4,490.94
  4. Step 4: Simplify right side
    12,698.94x = 85,532,332.50
  5. Step 5: Solve for x
    x = 85,532,332.50/12,698.94
  6. Step 6: Final answer
    x = 6,735.39

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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.