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Finding the Fourth Proportional to 678,653.96, 936,308.08 and 433,781.95

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Solution

The fourth proportional to 678,653.96, 936,308.08 and 433,781.95 is: 598,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,653.96 : 936,308.08 = 433,781.95 : x
  2. Step 2: Convert to fraction form
    678,653.96/936,308.08 = 433,781.95/x
  3. Step 3: Cross multiply
    678,653.96x = 936,308.08 × 433,781.95
  4. Step 4: Simplify right side
    678,653.96x = 406,153,546,455.77
  5. Step 5: Solve for x
    x = 406,153,546,455.77/678,653.96
  6. Step 6: Final answer
    x = 598,469.28

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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.