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Finding the Fourth Proportional to 877,908.15, 1,211,611.57 and 495,959.54

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Solution

The fourth proportional to 877,908.15, 1,211,611.57 and 495,959.54 is: 684,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,908.15 : 1,211,611.57 = 495,959.54 : x
  2. Step 2: Convert to fraction form
    877,908.15/1,211,611.57 = 495,959.54/x
  3. Step 3: Cross multiply
    877,908.15x = 1,211,611.57 × 495,959.54
  4. Step 4: Simplify right side
    877,908.15x = 600,910,309,617.92
  5. Step 5: Solve for x
    x = 600,910,309,617.92/877,908.15
  6. Step 6: Final answer
    x = 684,479.70

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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.