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Finding the Fourth Proportional to 647,787.06, 893,941.83 and 357,413.58

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Solution

The fourth proportional to 647,787.06, 893,941.83 and 357,413.58 is: 493,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,787.06 : 893,941.83 = 357,413.58 : x
  2. Step 2: Convert to fraction form
    647,787.06/893,941.83 = 357,413.58/x
  3. Step 3: Cross multiply
    647,787.06x = 893,941.83 × 357,413.58
  4. Step 4: Simplify right side
    647,787.06x = 319,506,949,772.05
  5. Step 5: Solve for x
    x = 319,506,949,772.05/647,787.06
  6. Step 6: Final answer
    x = 493,228.36

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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.