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Finding the Fourth Proportional to 911,527, 1,257,933.18 and 509,144.92

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Solution

The fourth proportional to 911,527, 1,257,933.18 and 509,144.92 is: 702,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,527 : 1,257,933.18 = 509,144.92 : x
  2. Step 2: Convert to fraction form
    911,527/1,257,933.18 = 509,144.92/x
  3. Step 3: Cross multiply
    911,527x = 1,257,933.18 × 509,144.92
  4. Step 4: Simplify right side
    911,527x = 640,470,288,296.45
  5. Step 5: Solve for x
    x = 640,470,288,296.45/911,527
  6. Step 6: Final answer
    x = 702,634.47

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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.