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Finding the Fourth Proportional to 705,530.88, 973,630.08 and 403,724.16

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Solution

The fourth proportional to 705,530.88, 973,630.08 and 403,724.16 is: 557,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,530.88 : 973,630.08 = 403,724.16 : x
  2. Step 2: Convert to fraction form
    705,530.88/973,630.08 = 403,724.16/x
  3. Step 3: Cross multiply
    705,530.88x = 973,630.08 × 403,724.16
  4. Step 4: Simplify right side
    705,530.88x = 393,077,986,198.73
  5. Step 5: Solve for x
    x = 393,077,986,198.73/705,530.88
  6. Step 6: Final answer
    x = 557,137.89

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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.