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Finding the Fourth Proportional to 670,472.34, 999,392.46 and 616,663.94

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Solution

The fourth proportional to 670,472.34, 999,392.46 and 616,663.94 is: 919,186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,472.34 : 999,392.46 = 616,663.94 : x
  2. Step 2: Convert to fraction form
    670,472.34/999,392.46 = 616,663.94/x
  3. Step 3: Cross multiply
    670,472.34x = 999,392.46 × 616,663.94
  4. Step 4: Simplify right side
    670,472.34x = 616,289,291,989.89
  5. Step 5: Solve for x
    x = 616,289,291,989.89/670,472.34
  6. Step 6: Final answer
    x = 919,186.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.