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Finding the Fourth Proportional to 13,124.90, 18,426.70 and 13,124.90

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Solution

The fourth proportional to 13,124.90, 18,426.70 and 13,124.90 is: 18,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.90 : 18,426.70 = 13,124.90 : x
  2. Step 2: Convert to fraction form
    13,124.90/18,426.70 = 13,124.90/x
  3. Step 3: Cross multiply
    13,124.90x = 18,426.70 × 13,124.90
  4. Step 4: Simplify right side
    13,124.90x = 241,848,594.83
  5. Step 5: Solve for x
    x = 241,848,594.83/13,124.90
  6. Step 6: Final answer
    x = 18,426.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.