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Finding the Fourth Proportional to 277,986.70, 416,980.05 and 256,335.40

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Solution

The fourth proportional to 277,986.70, 416,980.05 and 256,335.40 is: 384,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,986.70 : 416,980.05 = 256,335.40 : x
  2. Step 2: Convert to fraction form
    277,986.70/416,980.05 = 256,335.40/x
  3. Step 3: Cross multiply
    277,986.70x = 416,980.05 × 256,335.40
  4. Step 4: Simplify right side
    277,986.70x = 106,886,747,908.77
  5. Step 5: Solve for x
    x = 106,886,747,908.77/277,986.70
  6. Step 6: Final answer
    x = 384,503.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.