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Finding the Fourth Proportional to 14,907.68, 20,573.52 and 12,419.36

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Solution

The fourth proportional to 14,907.68, 20,573.52 and 12,419.36 is: 17,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,907.68 : 20,573.52 = 12,419.36 : x
  2. Step 2: Convert to fraction form
    14,907.68/20,573.52 = 12,419.36/x
  3. Step 3: Cross multiply
    14,907.68x = 20,573.52 × 12,419.36
  4. Step 4: Simplify right side
    14,907.68x = 255,509,951.35
  5. Step 5: Solve for x
    x = 255,509,951.35/14,907.68
  6. Step 6: Final answer
    x = 17,139.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.