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Finding the Fourth Proportional to 624,646.90, 862,011.64 and 338,166.91

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Solution

The fourth proportional to 624,646.90, 862,011.64 and 338,166.91 is: 466,669.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,646.90 : 862,011.64 = 338,166.91 : x
  2. Step 2: Convert to fraction form
    624,646.90/862,011.64 = 338,166.91/x
  3. Step 3: Cross multiply
    624,646.90x = 862,011.64 × 338,166.91
  4. Step 4: Simplify right side
    624,646.90x = 291,503,812,682.83
  5. Step 5: Solve for x
    x = 291,503,812,682.83/624,646.90
  6. Step 6: Final answer
    x = 466,669.75

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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.