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Finding the Fourth Proportional to 617,416.87, 926,125.34 and 407,005.60

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Solution

The fourth proportional to 617,416.87, 926,125.34 and 407,005.60 is: 610,508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,416.87 : 926,125.34 = 407,005.60 : x
  2. Step 2: Convert to fraction form
    617,416.87/926,125.34 = 407,005.60/x
  3. Step 3: Cross multiply
    617,416.87x = 926,125.34 × 407,005.60
  4. Step 4: Simplify right side
    617,416.87x = 376,938,199,681.90
  5. Step 5: Solve for x
    x = 376,938,199,681.90/617,416.87
  6. Step 6: Final answer
    x = 610,508.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.