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Finding the Fourth Proportional to 470,505.11, 705,683.54 and 391,053.22

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Solution

The fourth proportional to 470,505.11, 705,683.54 and 391,053.22 is: 586,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,505.11 : 705,683.54 = 391,053.22 : x
  2. Step 2: Convert to fraction form
    470,505.11/705,683.54 = 391,053.22/x
  3. Step 3: Cross multiply
    470,505.11x = 705,683.54 × 391,053.22
  4. Step 4: Simplify right side
    470,505.11x = 275,959,819,831.42
  5. Step 5: Solve for x
    x = 275,959,819,831.42/470,505.11
  6. Step 6: Final answer
    x = 586,518.23

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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.