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Finding the Fourth Proportional to 685,124.76, 945,430.77 and 379,182.60

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Solution

The fourth proportional to 685,124.76, 945,430.77 and 379,182.60 is: 523,249.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,124.76 : 945,430.77 = 379,182.60 : x
  2. Step 2: Convert to fraction form
    685,124.76/945,430.77 = 379,182.60/x
  3. Step 3: Cross multiply
    685,124.76x = 945,430.77 × 379,182.60
  4. Step 4: Simplify right side
    685,124.76x = 358,490,897,488.60
  5. Step 5: Solve for x
    x = 358,490,897,488.60/685,124.76
  6. Step 6: Final answer
    x = 523,249.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.