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Finding the Fourth Proportional to 9,152.68, 12,621.26 and 7,830.76

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Solution

The fourth proportional to 9,152.68, 12,621.26 and 7,830.76 is: 10,798.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,152.68 : 12,621.26 = 7,830.76 : x
  2. Step 2: Convert to fraction form
    9,152.68/12,621.26 = 7,830.76/x
  3. Step 3: Cross multiply
    9,152.68x = 12,621.26 × 7,830.76
  4. Step 4: Simplify right side
    9,152.68x = 98,834,057.96
  5. Step 5: Solve for x
    x = 98,834,057.96/9,152.68
  6. Step 6: Final answer
    x = 10,798.37

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Half scale
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Double scale
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Similar ratio
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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.