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Finding the Fourth Proportional to 705,710.60, 973,863.78 and 383,413.40

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Solution

The fourth proportional to 705,710.60, 973,863.78 and 383,413.40 is: 529,101.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,710.60 : 973,863.78 = 383,413.40 : x
  2. Step 2: Convert to fraction form
    705,710.60/973,863.78 = 383,413.40/x
  3. Step 3: Cross multiply
    705,710.60x = 973,863.78 × 383,413.40
  4. Step 4: Simplify right side
    705,710.60x = 373,392,423,026.65
  5. Step 5: Solve for x
    x = 373,392,423,026.65/705,710.60
  6. Step 6: Final answer
    x = 529,101.34

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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.