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Finding the Fourth Proportional to 718,833.02, 991,956.15 and 412,693.97

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Solution

The fourth proportional to 718,833.02, 991,956.15 and 412,693.97 is: 569,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,833.02 : 991,956.15 = 412,693.97 : x
  2. Step 2: Convert to fraction form
    718,833.02/991,956.15 = 412,693.97/x
  3. Step 3: Cross multiply
    718,833.02x = 991,956.15 × 412,693.97
  4. Step 4: Simplify right side
    718,833.02x = 409,374,316,649.64
  5. Step 5: Solve for x
    x = 409,374,316,649.64/718,833.02
  6. Step 6: Final answer
    x = 569,498.49

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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.