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Finding the Fourth Proportional to 705,580.77, 973,728.24 and 395,488.98

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Solution

The fourth proportional to 705,580.77, 973,728.24 and 395,488.98 is: 545,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,580.77 : 973,728.24 = 395,488.98 : x
  2. Step 2: Convert to fraction form
    705,580.77/973,728.24 = 395,488.98/x
  3. Step 3: Cross multiply
    705,580.77x = 973,728.24 × 395,488.98
  4. Step 4: Simplify right side
    705,580.77x = 385,098,786,951.71
  5. Step 5: Solve for x
    x = 385,098,786,951.71/705,580.77
  6. Step 6: Final answer
    x = 545,789.80

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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.