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Finding the Fourth Proportional to 28,594.80, 42,918.30 and 14,564.52

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Solution

The fourth proportional to 28,594.80, 42,918.30 and 14,564.52 is: 21,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,594.80 : 42,918.30 = 14,564.52 : x
  2. Step 2: Convert to fraction form
    28,594.80/42,918.30 = 14,564.52/x
  3. Step 3: Cross multiply
    28,594.80x = 42,918.30 × 14,564.52
  4. Step 4: Simplify right side
    28,594.80x = 625,084,438.72
  5. Step 5: Solve for x
    x = 625,084,438.72/28,594.80
  6. Step 6: Final answer
    x = 21,860.07

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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.