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Finding the Fourth Proportional to 705,693.60, 973,840.32 and 383,396.40

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Solution

The fourth proportional to 705,693.60, 973,840.32 and 383,396.40 is: 529,077.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,693.60 : 973,840.32 = 383,396.40 : x
  2. Step 2: Convert to fraction form
    705,693.60/973,840.32 = 383,396.40/x
  3. Step 3: Cross multiply
    705,693.60x = 973,840.32 × 383,396.40
  4. Step 4: Simplify right side
    705,693.60x = 373,366,872,862.85
  5. Step 5: Solve for x
    x = 373,366,872,862.85/705,693.60
  6. Step 6: Final answer
    x = 529,077.88

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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.