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Finding the Fourth Proportional to 528,655.59, 729,542.22 and 286,936.02

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Solution

The fourth proportional to 528,655.59, 729,542.22 and 286,936.02 is: 395,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,655.59 : 729,542.22 = 286,936.02 : x
  2. Step 2: Convert to fraction form
    528,655.59/729,542.22 = 286,936.02/x
  3. Step 3: Cross multiply
    528,655.59x = 729,542.22 × 286,936.02
  4. Step 4: Simplify right side
    528,655.59x = 209,331,941,028.76
  5. Step 5: Solve for x
    x = 209,331,941,028.76/528,655.59
  6. Step 6: Final answer
    x = 395,970.35

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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.