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Finding the Fourth Proportional to 705,661.07, 973,597.73 and 399,688.83

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Solution

The fourth proportional to 705,661.07, 973,597.73 and 399,688.83 is: 551,449.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,661.07 : 973,597.73 = 399,688.83 : x
  2. Step 2: Convert to fraction form
    705,661.07/973,597.73 = 399,688.83/x
  3. Step 3: Cross multiply
    705,661.07x = 973,597.73 × 399,688.83
  4. Step 4: Simplify right side
    705,661.07x = 389,136,135,595.91
  5. Step 5: Solve for x
    x = 389,136,135,595.91/705,661.07
  6. Step 6: Final answer
    x = 551,449.07

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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.