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Finding the Fourth Proportional to 616,195.90, 922,738.65 and 404,688.70

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Solution

The fourth proportional to 616,195.90, 922,738.65 and 404,688.70 is: 606,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,195.90 : 922,738.65 = 404,688.70 : x
  2. Step 2: Convert to fraction form
    616,195.90/922,738.65 = 404,688.70/x
  3. Step 3: Cross multiply
    616,195.90x = 922,738.65 × 404,688.70
  4. Step 4: Simplify right side
    616,195.90x = 373,421,904,708.26
  5. Step 5: Solve for x
    x = 373,421,904,708.26/616,195.90
  6. Step 6: Final answer
    x = 606,011.67

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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.