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Finding the Fourth Proportional to 620,163.84, 857,000.88 and 528,270.24

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Solution

The fourth proportional to 620,163.84, 857,000.88 and 528,270.24 is: 730,013.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,163.84 : 857,000.88 = 528,270.24 : x
  2. Step 2: Convert to fraction form
    620,163.84/857,000.88 = 528,270.24/x
  3. Step 3: Cross multiply
    620,163.84x = 857,000.88 × 528,270.24
  4. Step 4: Simplify right side
    620,163.84x = 452,728,060,557.81
  5. Step 5: Solve for x
    x = 452,728,060,557.81/620,163.84
  6. Step 6: Final answer
    x = 730,013.64

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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.