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Finding the Fourth Proportional to 693,291.92, 956,749.16 and 406,816.80

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Solution

The fourth proportional to 693,291.92, 956,749.16 and 406,816.80 is: 561,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,291.92 : 956,749.16 = 406,816.80 : x
  2. Step 2: Convert to fraction form
    693,291.92/956,749.16 = 406,816.80/x
  3. Step 3: Cross multiply
    693,291.92x = 956,749.16 × 406,816.80
  4. Step 4: Simplify right side
    693,291.92x = 389,221,631,673.89
  5. Step 5: Solve for x
    x = 389,221,631,673.89/693,291.92
  6. Step 6: Final answer
    x = 561,410.89

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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.