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Finding the Fourth Proportional to 704,953.80, 1,057,430.70 and 693,289.80

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Solution

The fourth proportional to 704,953.80, 1,057,430.70 and 693,289.80 is: 1,039,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,953.80 : 1,057,430.70 = 693,289.80 : x
  2. Step 2: Convert to fraction form
    704,953.80/1,057,430.70 = 693,289.80/x
  3. Step 3: Cross multiply
    704,953.80x = 1,057,430.70 × 693,289.80
  4. Step 4: Simplify right side
    704,953.80x = 733,105,918,516.86
  5. Step 5: Solve for x
    x = 733,105,918,516.86/704,953.80
  6. Step 6: Final answer
    x = 1,039,934.70

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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.