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Finding the Fourth Proportional to 666,358.23, 999,536.52 and 217,078.35

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Solution

The fourth proportional to 666,358.23, 999,536.52 and 217,078.35 is: 325,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,358.23 : 999,536.52 = 217,078.35 : x
  2. Step 2: Convert to fraction form
    666,358.23/999,536.52 = 217,078.35/x
  3. Step 3: Cross multiply
    666,358.23x = 999,536.52 × 217,078.35
  4. Step 4: Simplify right side
    666,358.23x = 216,977,738,526.34
  5. Step 5: Solve for x
    x = 216,977,738,526.34/666,358.23
  6. Step 6: Final answer
    x = 325,617.26

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1.5x scale

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.