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Finding the Fourth Proportional to 710,213.02, 980,087.47 and 387,923.02

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Solution

The fourth proportional to 710,213.02, 980,087.47 and 387,923.02 is: 535,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,213.02 : 980,087.47 = 387,923.02 : x
  2. Step 2: Convert to fraction form
    710,213.02/980,087.47 = 387,923.02/x
  3. Step 3: Cross multiply
    710,213.02x = 980,087.47 × 387,923.02
  4. Step 4: Simplify right side
    710,213.02x = 380,198,487,806.53
  5. Step 5: Solve for x
    x = 380,198,487,806.53/710,213.02
  6. Step 6: Final answer
    x = 535,330.22

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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.