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Finding the Fourth Proportional to 698,177.07, 963,497.10 and 388,108.77

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Solution

The fourth proportional to 698,177.07, 963,497.10 and 388,108.77 is: 535,597.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,177.07 : 963,497.10 = 388,108.77 : x
  2. Step 2: Convert to fraction form
    698,177.07/963,497.10 = 388,108.77/x
  3. Step 3: Cross multiply
    698,177.07x = 963,497.10 × 388,108.77
  4. Step 4: Simplify right side
    698,177.07x = 373,941,674,379.57
  5. Step 5: Solve for x
    x = 373,941,674,379.57/698,177.07
  6. Step 6: Final answer
    x = 535,597.19

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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.