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Finding the Fourth Proportional to 14,482.61, 19,981.35 and 8,108.26

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Solution

The fourth proportional to 14,482.61, 19,981.35 and 8,108.26 is: 11,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,482.61 : 19,981.35 = 8,108.26 : x
  2. Step 2: Convert to fraction form
    14,482.61/19,981.35 = 8,108.26/x
  3. Step 3: Cross multiply
    14,482.61x = 19,981.35 × 8,108.26
  4. Step 4: Simplify right side
    14,482.61x = 162,013,980.95
  5. Step 5: Solve for x
    x = 162,013,980.95/14,482.61
  6. Step 6: Final answer
    x = 11,186.79

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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.