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Finding the Fourth Proportional to 528,652.85, 729,539.07 and 286,935.42

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Solution

The fourth proportional to 528,652.85, 729,539.07 and 286,935.42 is: 395,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,652.85 : 729,539.07 = 286,935.42 : x
  2. Step 2: Convert to fraction form
    528,652.85/729,539.07 = 286,935.42/x
  3. Step 3: Cross multiply
    528,652.85x = 729,539.07 × 286,935.42
  4. Step 4: Simplify right side
    528,652.85x = 209,330,597,382.16
  5. Step 5: Solve for x
    x = 209,330,597,382.16/528,652.85
  6. Step 6: Final answer
    x = 395,969.87

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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.