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Finding the Fourth Proportional to 19,354.61, 26,710.90 and 11,398.39

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Solution

The fourth proportional to 19,354.61, 26,710.90 and 11,398.39 is: 15,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,354.61 : 26,710.90 = 11,398.39 : x
  2. Step 2: Convert to fraction form
    19,354.61/26,710.90 = 11,398.39/x
  3. Step 3: Cross multiply
    19,354.61x = 26,710.90 × 11,398.39
  4. Step 4: Simplify right side
    19,354.61x = 304,461,160.18
  5. Step 5: Solve for x
    x = 304,461,160.18/19,354.61
  6. Step 6: Final answer
    x = 15,730.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.