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Finding the Fourth Proportional to 1,569,409.80, 2,354,421.90 and 670,849.80

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Solution

The fourth proportional to 1,569,409.80, 2,354,421.90 and 670,849.80 is: 1,006,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569,409.80 : 2,354,421.90 = 670,849.80 : x
  2. Step 2: Convert to fraction form
    1,569,409.80/2,354,421.90 = 670,849.80/x
  3. Step 3: Cross multiply
    1,569,409.80x = 2,354,421.90 × 670,849.80
  4. Step 4: Simplify right side
    1,569,409.80x = 1,579,463,460,730.62
  5. Step 5: Solve for x
    x = 1,579,463,460,730.62/1,569,409.80
  6. Step 6: Final answer
    x = 1,006,406.01

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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.