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Finding the Fourth Proportional to 719,601, 993,136.86 and 417,795

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Solution

The fourth proportional to 719,601, 993,136.86 and 417,795 is: 576,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,601 : 993,136.86 = 417,795 : x
  2. Step 2: Convert to fraction form
    719,601/993,136.86 = 417,795/x
  3. Step 3: Cross multiply
    719,601x = 993,136.86 × 417,795
  4. Step 4: Simplify right side
    719,601x = 414,927,614,423.70
  5. Step 5: Solve for x
    x = 414,927,614,423.70/719,601
  6. Step 6: Final answer
    x = 576,607.89

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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.