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Finding the Fourth Proportional to 8,963.64, 12,368.75 and 4,929.82

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Solution

The fourth proportional to 8,963.64, 12,368.75 and 4,929.82 is: 6,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.64 : 12,368.75 = 4,929.82 : x
  2. Step 2: Convert to fraction form
    8,963.64/12,368.75 = 4,929.82/x
  3. Step 3: Cross multiply
    8,963.64x = 12,368.75 × 4,929.82
  4. Step 4: Simplify right side
    8,963.64x = 60,975,655.55
  5. Step 5: Solve for x
    x = 60,975,655.55/8,963.64
  6. Step 6: Final answer
    x = 6,802.56

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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.