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Finding the Fourth Proportional to 19,336.60, 28,947.30 and 11,541.40

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Solution

The fourth proportional to 19,336.60, 28,947.30 and 11,541.40 is: 17,277.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,336.60 : 28,947.30 = 11,541.40 : x
  2. Step 2: Convert to fraction form
    19,336.60/28,947.30 = 11,541.40/x
  3. Step 3: Cross multiply
    19,336.60x = 28,947.30 × 11,541.40
  4. Step 4: Simplify right side
    19,336.60x = 334,092,368.22
  5. Step 5: Solve for x
    x = 334,092,368.22/19,336.60
  6. Step 6: Final answer
    x = 17,277.72

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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.