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Finding the Fourth Proportional to 611,677.35, 843,774.30 and 568,378.40

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Solution

The fourth proportional to 611,677.35, 843,774.30 and 568,378.40 is: 784,045.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,677.35 : 843,774.30 = 568,378.40 : x
  2. Step 2: Convert to fraction form
    611,677.35/843,774.30 = 568,378.40/x
  3. Step 3: Cross multiply
    611,677.35x = 843,774.30 × 568,378.40
  4. Step 4: Simplify right side
    611,677.35x = 479,583,082,376.25
  5. Step 5: Solve for x
    x = 479,583,082,376.25/611,677.35
  6. Step 6: Final answer
    x = 784,045.84

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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.