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Finding the Fourth Proportional to 14,609.76, 21,875.76 and 11,415.36

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Solution

The fourth proportional to 14,609.76, 21,875.76 and 11,415.36 is: 17,092.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.76 : 21,875.76 = 11,415.36 : x
  2. Step 2: Convert to fraction form
    14,609.76/21,875.76 = 11,415.36/x
  3. Step 3: Cross multiply
    14,609.76x = 21,875.76 × 11,415.36
  4. Step 4: Simplify right side
    14,609.76x = 249,719,675.67
  5. Step 5: Solve for x
    x = 249,719,675.67/14,609.76
  6. Step 6: Final answer
    x = 17,092.66

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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.