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Finding the Fourth Proportional to 528,169.23, 728,871.44 and 286,450.83

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Solution

The fourth proportional to 528,169.23, 728,871.44 and 286,450.83 is: 395,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,169.23 : 728,871.44 = 286,450.83 : x
  2. Step 2: Convert to fraction form
    528,169.23/728,871.44 = 286,450.83/x
  3. Step 3: Cross multiply
    528,169.23x = 728,871.44 × 286,450.83
  4. Step 4: Simplify right side
    528,169.23x = 208,785,827,519.04
  5. Step 5: Solve for x
    x = 208,785,827,519.04/528,169.23
  6. Step 6: Final answer
    x = 395,301.01

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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.