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Finding the Fourth Proportional to 611,705.40, 844,124.88 and 339,790.80

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Solution

The fourth proportional to 611,705.40, 844,124.88 and 339,790.80 is: 468,895.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,705.40 : 844,124.88 = 339,790.80 : x
  2. Step 2: Convert to fraction form
    611,705.40/844,124.88 = 339,790.80/x
  3. Step 3: Cross multiply
    611,705.40x = 844,124.88 × 339,790.80
  4. Step 4: Simplify right side
    611,705.40x = 286,825,868,275.10
  5. Step 5: Solve for x
    x = 286,825,868,275.10/611,705.40
  6. Step 6: Final answer
    x = 468,895.43

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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.