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Finding the Fourth Proportional to 528,418.69, 729,196.53 and 286,692.01

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Solution

The fourth proportional to 528,418.69, 729,196.53 and 286,692.01 is: 395,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,418.69 : 729,196.53 = 286,692.01 : x
  2. Step 2: Convert to fraction form
    528,418.69/729,196.53 = 286,692.01/x
  3. Step 3: Cross multiply
    528,418.69x = 729,196.53 × 286,692.01
  4. Step 4: Simplify right side
    528,418.69x = 209,054,815,972.64
  5. Step 5: Solve for x
    x = 209,054,815,972.64/528,418.69
  6. Step 6: Final answer
    x = 395,623.43

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1.5x scale

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.