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Finding the Fourth Proportional to 10,841.72, 14,946.72 and 6,860.84

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Solution

The fourth proportional to 10,841.72, 14,946.72 and 6,860.84 is: 9,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,841.72 : 14,946.72 = 6,860.84 : x
  2. Step 2: Convert to fraction form
    10,841.72/14,946.72 = 6,860.84/x
  3. Step 3: Cross multiply
    10,841.72x = 14,946.72 × 6,860.84
  4. Step 4: Simplify right side
    10,841.72x = 102,547,054.44
  5. Step 5: Solve for x
    x = 102,547,054.44/10,841.72
  6. Step 6: Final answer
    x = 9,458.56

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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.