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Finding the Fourth Proportional to 765,880.32, 1,149,859.84 and 528,640

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Solution

The fourth proportional to 765,880.32, 1,149,859.84 and 528,640 is: 793,677.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,880.32 : 1,149,859.84 = 528,640 : x
  2. Step 2: Convert to fraction form
    765,880.32/1,149,859.84 = 528,640/x
  3. Step 3: Cross multiply
    765,880.32x = 1,149,859.84 × 528,640
  4. Step 4: Simplify right side
    765,880.32x = 607,861,905,817.60
  5. Step 5: Solve for x
    x = 607,861,905,817.60/765,880.32
  6. Step 6: Final answer
    x = 793,677.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.