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Finding the Fourth Proportional to 10,641.76, 14,681.63 and 6,163.87

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Solution

The fourth proportional to 10,641.76, 14,681.63 and 6,163.87 is: 8,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.76 : 14,681.63 = 6,163.87 : x
  2. Step 2: Convert to fraction form
    10,641.76/14,681.63 = 6,163.87/x
  3. Step 3: Cross multiply
    10,641.76x = 14,681.63 × 6,163.87
  4. Step 4: Simplify right side
    10,641.76x = 90,495,658.71
  5. Step 5: Solve for x
    x = 90,495,658.71/10,641.76
  6. Step 6: Final answer
    x = 8,503.82

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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.