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Finding the Fourth Proportional to 8,718.09, 12,030.15 and 4,941.53

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Solution

The fourth proportional to 8,718.09, 12,030.15 and 4,941.53 is: 6,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.09 : 12,030.15 = 4,941.53 : x
  2. Step 2: Convert to fraction form
    8,718.09/12,030.15 = 4,941.53/x
  3. Step 3: Cross multiply
    8,718.09x = 12,030.15 × 4,941.53
  4. Step 4: Simplify right side
    8,718.09x = 59,447,322.83
  5. Step 5: Solve for x
    x = 59,447,322.83/8,718.09
  6. Step 6: Final answer
    x = 6,818.85

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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.