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Finding the Fourth Proportional to 706,759.48, 975,353.57 and 405,011.80

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Solution

The fourth proportional to 706,759.48, 975,353.57 and 405,011.80 is: 558,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,759.48 : 975,353.57 = 405,011.80 : x
  2. Step 2: Convert to fraction form
    706,759.48/975,353.57 = 405,011.80/x
  3. Step 3: Cross multiply
    706,759.48x = 975,353.57 × 405,011.80
  4. Step 4: Simplify right side
    706,759.48x = 395,029,702,997.07
  5. Step 5: Solve for x
    x = 395,029,702,997.07/706,759.48
  6. Step 6: Final answer
    x = 558,930.89

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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.