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Finding the Fourth Proportional to 8,762.66, 12,079.93 and 5,403.23

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Solution

The fourth proportional to 8,762.66, 12,079.93 and 5,403.23 is: 7,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.66 : 12,079.93 = 5,403.23 : x
  2. Step 2: Convert to fraction form
    8,762.66/12,079.93 = 5,403.23/x
  3. Step 3: Cross multiply
    8,762.66x = 12,079.93 × 5,403.23
  4. Step 4: Simplify right side
    8,762.66x = 65,270,552.76
  5. Step 5: Solve for x
    x = 65,270,552.76/8,762.66
  6. Step 6: Final answer
    x = 7,448.72

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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.