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Finding the Fourth Proportional to 19,294.35, 28,953.03 and 8,619.87

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Solution

The fourth proportional to 19,294.35, 28,953.03 and 8,619.87 is: 12,934.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.35 : 28,953.03 = 8,619.87 : x
  2. Step 2: Convert to fraction form
    19,294.35/28,953.03 = 8,619.87/x
  3. Step 3: Cross multiply
    19,294.35x = 28,953.03 × 8,619.87
  4. Step 4: Simplify right side
    19,294.35x = 249,571,354.71
  5. Step 5: Solve for x
    x = 249,571,354.71/19,294.35
  6. Step 6: Final answer
    x = 12,934.94

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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.