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Finding the Fourth Proportional to 528,655.57, 729,525.12 and 286,932.94

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Solution

The fourth proportional to 528,655.57, 729,525.12 and 286,932.94 is: 395,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,655.57 : 729,525.12 = 286,932.94 : x
  2. Step 2: Convert to fraction form
    528,655.57/729,525.12 = 286,932.94/x
  3. Step 3: Cross multiply
    528,655.57x = 729,525.12 × 286,932.94
  4. Step 4: Simplify right side
    528,655.57x = 209,324,787,485.45
  5. Step 5: Solve for x
    x = 209,324,787,485.45/528,655.57
  6. Step 6: Final answer
    x = 395,956.84

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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.