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Finding the Fourth Proportional to 1,235,961.80, 1,853,942.70 and 525,811.40

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Solution

The fourth proportional to 1,235,961.80, 1,853,942.70 and 525,811.40 is: 788,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,961.80 : 1,853,942.70 = 525,811.40 : x
  2. Step 2: Convert to fraction form
    1,235,961.80/1,853,942.70 = 525,811.40/x
  3. Step 3: Cross multiply
    1,235,961.80x = 1,853,942.70 × 525,811.40
  4. Step 4: Simplify right side
    1,235,961.80x = 974,824,206,606.78
  5. Step 5: Solve for x
    x = 974,824,206,606.78/1,235,961.80
  6. Step 6: Final answer
    x = 788,717.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.