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Finding the Fourth Proportional to 722,164.20, 996,620.79 and 435,678.13

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Solution

The fourth proportional to 722,164.20, 996,620.79 and 435,678.13 is: 601,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,164.20 : 996,620.79 = 435,678.13 : x
  2. Step 2: Convert to fraction form
    722,164.20/996,620.79 = 435,678.13/x
  3. Step 3: Cross multiply
    722,164.20x = 996,620.79 × 435,678.13
  4. Step 4: Simplify right side
    722,164.20x = 434,205,882,106.32
  5. Step 5: Solve for x
    x = 434,205,882,106.32/722,164.20
  6. Step 6: Final answer
    x = 601,256.45

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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.