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Finding the Fourth Proportional to 19,073.34, 28,621.62 and 7,386.12

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Solution

The fourth proportional to 19,073.34, 28,621.62 and 7,386.12 is: 11,083.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,073.34 : 28,621.62 = 7,386.12 : x
  2. Step 2: Convert to fraction form
    19,073.34/28,621.62 = 7,386.12/x
  3. Step 3: Cross multiply
    19,073.34x = 28,621.62 × 7,386.12
  4. Step 4: Simplify right side
    19,073.34x = 211,402,719.91
  5. Step 5: Solve for x
    x = 211,402,719.91/19,073.34
  6. Step 6: Final answer
    x = 11,083.68

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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.