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Finding the Fourth Proportional to 1,619,666.40, 2,426,000.40 and 1,339,730.40

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Solution

The fourth proportional to 1,619,666.40, 2,426,000.40 and 1,339,730.40 is: 2,006,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,666.40 : 2,426,000.40 = 1,339,730.40 : x
  2. Step 2: Convert to fraction form
    1,619,666.40/2,426,000.40 = 1,339,730.40/x
  3. Step 3: Cross multiply
    1,619,666.40x = 2,426,000.40 × 1,339,730.40
  4. Step 4: Simplify right side
    1,619,666.40x = 3,250,186,486,292.16
  5. Step 5: Solve for x
    x = 3,250,186,486,292.16/1,619,666.40
  6. Step 6: Final answer
    x = 2,006,701.19

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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.