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Finding the Fourth Proportional to 406,666.79, 606,364.47 and 395,493.93

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Solution

The fourth proportional to 406,666.79, 606,364.47 and 395,493.93 is: 589,705.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,666.79 : 606,364.47 = 395,493.93 : x
  2. Step 2: Convert to fraction form
    406,666.79/606,364.47 = 395,493.93/x
  3. Step 3: Cross multiply
    406,666.79x = 606,364.47 × 395,493.93
  4. Step 4: Simplify right side
    406,666.79x = 239,813,462,243.38
  5. Step 5: Solve for x
    x = 239,813,462,243.38/406,666.79
  6. Step 6: Final answer
    x = 589,705.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.