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Finding the Fourth Proportional to 647,731.84, 893,581.11 and 375,642.11

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Solution

The fourth proportional to 647,731.84, 893,581.11 and 375,642.11 is: 518,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,731.84 : 893,581.11 = 375,642.11 : x
  2. Step 2: Convert to fraction form
    647,731.84/893,581.11 = 375,642.11/x
  3. Step 3: Cross multiply
    647,731.84x = 893,581.11 × 375,642.11
  4. Step 4: Simplify right side
    647,731.84x = 335,666,689,148.64
  5. Step 5: Solve for x
    x = 335,666,689,148.64/647,731.84
  6. Step 6: Final answer
    x = 518,218.60

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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.