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Finding the Fourth Proportional to 698,124.49, 963,424.86 and 388,056.18

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Solution

The fourth proportional to 698,124.49, 963,424.86 and 388,056.18 is: 535,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,124.49 : 963,424.86 = 388,056.18 : x
  2. Step 2: Convert to fraction form
    698,124.49/963,424.86 = 388,056.18/x
  3. Step 3: Cross multiply
    698,124.49x = 963,424.86 × 388,056.18
  4. Step 4: Simplify right side
    698,124.49x = 373,862,970,888.64
  5. Step 5: Solve for x
    x = 373,862,970,888.64/698,124.49
  6. Step 6: Final answer
    x = 535,524.79

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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.