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Finding the Fourth Proportional to 905,722, 1,249,577.76 and 543,263.20

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Solution

The fourth proportional to 905,722, 1,249,577.76 and 543,263.20 is: 749,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,722 : 1,249,577.76 = 543,263.20 : x
  2. Step 2: Convert to fraction form
    905,722/1,249,577.76 = 543,263.20/x
  3. Step 3: Cross multiply
    905,722x = 1,249,577.76 × 543,263.20
  4. Step 4: Simplify right side
    905,722x = 678,849,612,546.43
  5. Step 5: Solve for x
    x = 678,849,612,546.43/905,722
  6. Step 6: Final answer
    x = 749,512.12

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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.