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Finding the Fourth Proportional to 705,611.52, 973,762.56 and 403,902.72

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Solution

The fourth proportional to 705,611.52, 973,762.56 and 403,902.72 is: 557,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,611.52 : 973,762.56 = 403,902.72 : x
  2. Step 2: Convert to fraction form
    705,611.52/973,762.56 = 403,902.72/x
  3. Step 3: Cross multiply
    705,611.52x = 973,762.56 × 403,902.72
  4. Step 4: Simplify right side
    705,611.52x = 393,305,346,618.16
  5. Step 5: Solve for x
    x = 393,305,346,618.16/705,611.52
  6. Step 6: Final answer
    x = 557,396.44

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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.