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Finding the Fourth Proportional to 19,296.40, 28,901.40 and 18,864.40

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Solution

The fourth proportional to 19,296.40, 28,901.40 and 18,864.40 is: 28,254.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.40 : 28,901.40 = 18,864.40 : x
  2. Step 2: Convert to fraction form
    19,296.40/28,901.40 = 18,864.40/x
  3. Step 3: Cross multiply
    19,296.40x = 28,901.40 × 18,864.40
  4. Step 4: Simplify right side
    19,296.40x = 545,207,570.16
  5. Step 5: Solve for x
    x = 545,207,570.16/19,296.40
  6. Step 6: Final answer
    x = 28,254.37

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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.