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Finding the Fourth Proportional to 617,861.60, 852,720.84 and 376,285.76

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Solution

The fourth proportional to 617,861.60, 852,720.84 and 376,285.76 is: 519,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,861.60 : 852,720.84 = 376,285.76 : x
  2. Step 2: Convert to fraction form
    617,861.60/852,720.84 = 376,285.76/x
  3. Step 3: Cross multiply
    617,861.60x = 852,720.84 × 376,285.76
  4. Step 4: Simplify right side
    617,861.60x = 320,866,709,347.24
  5. Step 5: Solve for x
    x = 320,866,709,347.24/617,861.60
  6. Step 6: Final answer
    x = 519,318.10

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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.