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Finding the Fourth Proportional to 543,816.76, 750,257.76 and 400,916.56

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Solution

The fourth proportional to 543,816.76, 750,257.76 and 400,916.56 is: 553,110.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,816.76 : 750,257.76 = 400,916.56 : x
  2. Step 2: Convert to fraction form
    543,816.76/750,257.76 = 400,916.56/x
  3. Step 3: Cross multiply
    543,816.76x = 750,257.76 × 400,916.56
  4. Step 4: Simplify right side
    543,816.76x = 300,790,760,252.51
  5. Step 5: Solve for x
    x = 300,790,760,252.51/543,816.76
  6. Step 6: Final answer
    x = 553,110.50

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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.