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Finding the Fourth Proportional to 7,166.76, 9,897.63 and 4,934.40

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Solution

The fourth proportional to 7,166.76, 9,897.63 and 4,934.40 is: 6,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166.76 : 9,897.63 = 4,934.40 : x
  2. Step 2: Convert to fraction form
    7,166.76/9,897.63 = 4,934.40/x
  3. Step 3: Cross multiply
    7,166.76x = 9,897.63 × 4,934.40
  4. Step 4: Simplify right side
    7,166.76x = 48,838,865.47
  5. Step 5: Solve for x
    x = 48,838,865.47/7,166.76
  6. Step 6: Final answer
    x = 6,814.64

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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.