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Finding the Fourth Proportional to 528,672.14, 729,568.30 and 286,954.76

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Solution

The fourth proportional to 528,672.14, 729,568.30 and 286,954.76 is: 395,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,672.14 : 729,568.30 = 286,954.76 : x
  2. Step 2: Convert to fraction form
    528,672.14/729,568.30 = 286,954.76/x
  3. Step 3: Cross multiply
    528,672.14x = 729,568.30 × 286,954.76
  4. Step 4: Simplify right side
    528,672.14x = 209,353,096,430.11
  5. Step 5: Solve for x
    x = 209,353,096,430.11/528,672.14
  6. Step 6: Final answer
    x = 395,997.97

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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.