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Finding the Fourth Proportional to 528,618.17, 729,500.07 and 286,903.64

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Solution

The fourth proportional to 528,618.17, 729,500.07 and 286,903.64 is: 395,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,618.17 : 729,500.07 = 286,903.64 : x
  2. Step 2: Convert to fraction form
    528,618.17/729,500.07 = 286,903.64/x
  3. Step 3: Cross multiply
    528,618.17x = 729,500.07 × 286,903.64
  4. Step 4: Simplify right side
    528,618.17x = 209,296,220,381.24
  5. Step 5: Solve for x
    x = 209,296,220,381.24/528,618.17
  6. Step 6: Final answer
    x = 395,930.81

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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.