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Finding the Fourth Proportional to 617,636.69, 926,079.59 and 257,372.18

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Solution

The fourth proportional to 617,636.69, 926,079.59 and 257,372.18 is: 385,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,636.69 : 926,079.59 = 257,372.18 : x
  2. Step 2: Convert to fraction form
    617,636.69/926,079.59 = 257,372.18/x
  3. Step 3: Cross multiply
    617,636.69x = 926,079.59 × 257,372.18
  4. Step 4: Simplify right side
    617,636.69x = 238,347,117,014.55
  5. Step 5: Solve for x
    x = 238,347,117,014.55/617,636.69
  6. Step 6: Final answer
    x = 385,901.81

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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.