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Finding the Fourth Proportional to 611,875.29, 844,338.40 and 353,768.80

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Solution

The fourth proportional to 611,875.29, 844,338.40 and 353,768.80 is: 488,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,875.29 : 844,338.40 = 353,768.80 : x
  2. Step 2: Convert to fraction form
    611,875.29/844,338.40 = 353,768.80/x
  3. Step 3: Cross multiply
    611,875.29x = 844,338.40 × 353,768.80
  4. Step 4: Simplify right side
    611,875.29x = 298,700,583,139.74
  5. Step 5: Solve for x
    x = 298,700,583,139.74/611,875.29
  6. Step 6: Final answer
    x = 488,172.33

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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.