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Finding the Fourth Proportional to 528,652.58, 729,538.09 and 286,933.03

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Solution

The fourth proportional to 528,652.58, 729,538.09 and 286,933.03 is: 395,966.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,652.58 : 729,538.09 = 286,933.03 : x
  2. Step 2: Convert to fraction form
    528,652.58/729,538.09 = 286,933.03/x
  3. Step 3: Cross multiply
    528,652.58x = 729,538.09 × 286,933.03
  4. Step 4: Simplify right side
    528,652.58x = 209,328,577,840.59
  5. Step 5: Solve for x
    x = 209,328,577,840.59/528,652.58
  6. Step 6: Final answer
    x = 395,966.25

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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.