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Finding the Fourth Proportional to 647,787.68, 893,948.55 and 361,326.32

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Solution

The fourth proportional to 647,787.68, 893,948.55 and 361,326.32 is: 498,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,787.68 : 893,948.55 = 361,326.32 : x
  2. Step 2: Convert to fraction form
    647,787.68/893,948.55 = 361,326.32/x
  3. Step 3: Cross multiply
    647,787.68x = 893,948.55 × 361,326.32
  4. Step 4: Simplify right side
    647,787.68x = 323,007,139,840.84
  5. Step 5: Solve for x
    x = 323,007,139,840.84/647,787.68
  6. Step 6: Final answer
    x = 498,631.19

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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.