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Finding the Fourth Proportional to 693,459.36, 956,992.86 and 391,653.36

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Solution

The fourth proportional to 693,459.36, 956,992.86 and 391,653.36 is: 540,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,459.36 : 956,992.86 = 391,653.36 : x
  2. Step 2: Convert to fraction form
    693,459.36/956,992.86 = 391,653.36/x
  3. Step 3: Cross multiply
    693,459.36x = 956,992.86 × 391,653.36
  4. Step 4: Simplify right side
    693,459.36x = 374,809,469,115.01
  5. Step 5: Solve for x
    x = 374,809,469,115.01/693,459.36
  6. Step 6: Final answer
    x = 540,492.34

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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.