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Finding the Fourth Proportional to 586,640.35, 878,360.25 and 444,053.42

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Solution

The fourth proportional to 586,640.35, 878,360.25 and 444,053.42 is: 664,868.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,640.35 : 878,360.25 = 444,053.42 : x
  2. Step 2: Convert to fraction form
    586,640.35/878,360.25 = 444,053.42/x
  3. Step 3: Cross multiply
    586,640.35x = 878,360.25 × 444,053.42
  4. Step 4: Simplify right side
    586,640.35x = 390,038,871,101.42
  5. Step 5: Solve for x
    x = 390,038,871,101.42/586,640.35
  6. Step 6: Final answer
    x = 664,868.81

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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.