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Finding the Fourth Proportional to 670,619.70, 1,005,929.55 and 670,619.70

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Solution

The fourth proportional to 670,619.70, 1,005,929.55 and 670,619.70 is: 1,005,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,619.70 : 1,005,929.55 = 670,619.70 : x
  2. Step 2: Convert to fraction form
    670,619.70/1,005,929.55 = 670,619.70/x
  3. Step 3: Cross multiply
    670,619.70x = 1,005,929.55 × 670,619.70
  4. Step 4: Simplify right side
    670,619.70x = 674,596,173,042.14
  5. Step 5: Solve for x
    x = 674,596,173,042.14/670,619.70
  6. Step 6: Final answer
    x = 1,005,929.55

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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.