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Finding the Fourth Proportional to 611,139.67, 843,360.06 and 339,191.62

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Solution

The fourth proportional to 611,139.67, 843,360.06 and 339,191.62 is: 468,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,139.67 : 843,360.06 = 339,191.62 : x
  2. Step 2: Convert to fraction form
    611,139.67/843,360.06 = 339,191.62/x
  3. Step 3: Cross multiply
    611,139.67x = 843,360.06 × 339,191.62
  4. Step 4: Simplify right side
    611,139.67x = 286,060,664,994.70
  5. Step 5: Solve for x
    x = 286,060,664,994.70/611,139.67
  6. Step 6: Final answer
    x = 468,077.40

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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.