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Finding the Fourth Proportional to 713,696.40, 984,899.52 and 411,890.40

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Solution

The fourth proportional to 713,696.40, 984,899.52 and 411,890.40 is: 568,407.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,696.40 : 984,899.52 = 411,890.40 : x
  2. Step 2: Convert to fraction form
    713,696.40/984,899.52 = 411,890.40/x
  3. Step 3: Cross multiply
    713,696.40x = 984,899.52 × 411,890.40
  4. Step 4: Simplify right side
    713,696.40x = 405,670,657,252.61
  5. Step 5: Solve for x
    x = 405,670,657,252.61/713,696.40
  6. Step 6: Final answer
    x = 568,407.88

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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.