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Finding the Fourth Proportional to 472,300.80, 662,620.80 and 472,300.80

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Solution

The fourth proportional to 472,300.80, 662,620.80 and 472,300.80 is: 662,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,300.80 : 662,620.80 = 472,300.80 : x
  2. Step 2: Convert to fraction form
    472,300.80/662,620.80 = 472,300.80/x
  3. Step 3: Cross multiply
    472,300.80x = 662,620.80 × 472,300.80
  4. Step 4: Simplify right side
    472,300.80x = 312,956,333,936.64
  5. Step 5: Solve for x
    x = 312,956,333,936.64/472,300.80
  6. Step 6: Final answer
    x = 662,620.80

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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.