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Finding the Fourth Proportional to 698,180.49, 963,501.86 and 388,112.18

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Solution

The fourth proportional to 698,180.49, 963,501.86 and 388,112.18 is: 535,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,180.49 : 963,501.86 = 388,112.18 : x
  2. Step 2: Convert to fraction form
    698,180.49/963,501.86 = 388,112.18/x
  3. Step 3: Cross multiply
    698,180.49x = 963,501.86 × 388,112.18
  4. Step 4: Simplify right side
    698,180.49x = 373,946,803,471.43
  5. Step 5: Solve for x
    x = 373,946,803,471.43/698,180.49
  6. Step 6: Final answer
    x = 535,601.91

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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.