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Finding the Fourth Proportional to 717,167.70, 989,695.04 and 411,255.60

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Solution

The fourth proportional to 717,167.70, 989,695.04 and 411,255.60 is: 567,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,167.70 : 989,695.04 = 411,255.60 : x
  2. Step 2: Convert to fraction form
    717,167.70/989,695.04 = 411,255.60/x
  3. Step 3: Cross multiply
    717,167.70x = 989,695.04 × 411,255.60
  4. Step 4: Simplify right side
    717,167.70x = 407,017,625,435.95
  5. Step 5: Solve for x
    x = 407,017,625,435.95/717,167.70
  6. Step 6: Final answer
    x = 567,534.80

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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.