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Finding the Fourth Proportional to 308,963.70, 433,482.30 and 308,963.70

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Solution

The fourth proportional to 308,963.70, 433,482.30 and 308,963.70 is: 433,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,963.70 : 433,482.30 = 308,963.70 : x
  2. Step 2: Convert to fraction form
    308,963.70/433,482.30 = 308,963.70/x
  3. Step 3: Cross multiply
    308,963.70x = 433,482.30 × 308,963.70
  4. Step 4: Simplify right side
    308,963.70x = 133,930,295,292.51
  5. Step 5: Solve for x
    x = 133,930,295,292.51/308,963.70
  6. Step 6: Final answer
    x = 433,482.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.