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Finding the Fourth Proportional to 8,607.28, 11,875.08 and 4,829.92

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Solution

The fourth proportional to 8,607.28, 11,875.08 and 4,829.92 is: 6,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.28 : 11,875.08 = 4,829.92 : x
  2. Step 2: Convert to fraction form
    8,607.28/11,875.08 = 4,829.92/x
  3. Step 3: Cross multiply
    8,607.28x = 11,875.08 × 4,829.92
  4. Step 4: Simplify right side
    8,607.28x = 57,355,683.13
  5. Step 5: Solve for x
    x = 57,355,683.13/8,607.28
  6. Step 6: Final answer
    x = 6,663.63

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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.