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Finding the Fourth Proportional to 8,702.93, 12,011.13 and 5,346.18

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Solution

The fourth proportional to 8,702.93, 12,011.13 and 5,346.18 is: 7,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.93 : 12,011.13 = 5,346.18 : x
  2. Step 2: Convert to fraction form
    8,702.93/12,011.13 = 5,346.18/x
  3. Step 3: Cross multiply
    8,702.93x = 12,011.13 × 5,346.18
  4. Step 4: Simplify right side
    8,702.93x = 64,213,662.98
  5. Step 5: Solve for x
    x = 64,213,662.98/8,702.93
  6. Step 6: Final answer
    x = 7,378.40

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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.