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Finding the Fourth Proportional to 528,099.17, 728,777.03 and 286,381.67

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Solution

The fourth proportional to 528,099.17, 728,777.03 and 286,381.67 is: 395,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,099.17 : 728,777.03 = 286,381.67 : x
  2. Step 2: Convert to fraction form
    528,099.17/728,777.03 = 286,381.67/x
  3. Step 3: Cross multiply
    528,099.17x = 728,777.03 × 286,381.67
  4. Step 4: Simplify right side
    528,099.17x = 208,708,383,299.07
  5. Step 5: Solve for x
    x = 208,708,383,299.07/528,099.17
  6. Step 6: Final answer
    x = 395,206.80

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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.