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Finding the Fourth Proportional to 912,274.88, 1,368,281.88 and 313,224.80

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Solution

The fourth proportional to 912,274.88, 1,368,281.88 and 313,224.80 is: 469,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,274.88 : 1,368,281.88 = 313,224.80 : x
  2. Step 2: Convert to fraction form
    912,274.88/1,368,281.88 = 313,224.80/x
  3. Step 3: Cross multiply
    912,274.88x = 1,368,281.88 × 313,224.80
  4. Step 4: Simplify right side
    912,274.88x = 428,579,818,206.62
  5. Step 5: Solve for x
    x = 428,579,818,206.62/912,274.88
  6. Step 6: Final answer
    x = 469,792.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.