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Finding the Fourth Proportional to 698,174.07, 963,492.96 and 388,105.77

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Solution

The fourth proportional to 698,174.07, 963,492.96 and 388,105.77 is: 535,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,174.07 : 963,492.96 = 388,105.77 : x
  2. Step 2: Convert to fraction form
    698,174.07/963,492.96 = 388,105.77/x
  3. Step 3: Cross multiply
    698,174.07x = 963,492.96 × 388,105.77
  4. Step 4: Simplify right side
    698,174.07x = 373,937,177,130.38
  5. Step 5: Solve for x
    x = 373,937,177,130.38/698,174.07
  6. Step 6: Final answer
    x = 535,593.05

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1.5x scale

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.