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Finding the Fourth Proportional to 762,866.76, 1,052,805.46 and 423,335

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Solution

The fourth proportional to 762,866.76, 1,052,805.46 and 423,335 is: 584,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,866.76 : 1,052,805.46 = 423,335 : x
  2. Step 2: Convert to fraction form
    762,866.76/1,052,805.46 = 423,335/x
  3. Step 3: Cross multiply
    762,866.76x = 1,052,805.46 × 423,335
  4. Step 4: Simplify right side
    762,866.76x = 445,689,399,409.10
  5. Step 5: Solve for x
    x = 445,689,399,409.10/762,866.76
  6. Step 6: Final answer
    x = 584,229.68

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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.