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Finding the Fourth Proportional to 12,174.96, 16,798.08 and 7,641.60

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Solution

The fourth proportional to 12,174.96, 16,798.08 and 7,641.60 is: 10,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,174.96 : 16,798.08 = 7,641.60 : x
  2. Step 2: Convert to fraction form
    12,174.96/16,798.08 = 7,641.60/x
  3. Step 3: Cross multiply
    12,174.96x = 16,798.08 × 7,641.60
  4. Step 4: Simplify right side
    12,174.96x = 128,364,208.13
  5. Step 5: Solve for x
    x = 128,364,208.13/12,174.96
  6. Step 6: Final answer
    x = 10,543.30

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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.