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Finding the Fourth Proportional to 618,216.76, 853,431.30 and 414,400.81

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Solution

The fourth proportional to 618,216.76, 853,431.30 and 414,400.81 is: 572,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,216.76 : 853,431.30 = 414,400.81 : x
  2. Step 2: Convert to fraction form
    618,216.76/853,431.30 = 414,400.81/x
  3. Step 3: Cross multiply
    618,216.76x = 853,431.30 × 414,400.81
  4. Step 4: Simplify right side
    618,216.76x = 353,662,621,999.35
  5. Step 5: Solve for x
    x = 353,662,621,999.35/618,216.76
  6. Step 6: Final answer
    x = 572,068.96

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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.