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Finding the Fourth Proportional to 623,808.10, 936,041.81 and 442,609.92

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Solution

The fourth proportional to 623,808.10, 936,041.81 and 442,609.92 is: 664,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,808.10 : 936,041.81 = 442,609.92 : x
  2. Step 2: Convert to fraction form
    623,808.10/936,041.81 = 442,609.92/x
  3. Step 3: Cross multiply
    623,808.10x = 936,041.81 × 442,609.92
  4. Step 4: Simplify right side
    623,808.10x = 414,301,390,640.76
  5. Step 5: Solve for x
    x = 414,301,390,640.76/623,808.10
  6. Step 6: Final answer
    x = 664,148.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.