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Finding the Fourth Proportional to 19,061.52, 28,592.80 and 5,210.52

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Solution

The fourth proportional to 19,061.52, 28,592.80 and 5,210.52 is: 7,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.52 : 28,592.80 = 5,210.52 : x
  2. Step 2: Convert to fraction form
    19,061.52/28,592.80 = 5,210.52/x
  3. Step 3: Cross multiply
    19,061.52x = 28,592.80 × 5,210.52
  4. Step 4: Simplify right side
    19,061.52x = 148,983,356.26
  5. Step 5: Solve for x
    x = 148,983,356.26/19,061.52
  6. Step 6: Final answer
    x = 7,815.92

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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.