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Finding the Fourth Proportional to 668,922.64, 923,880.15 and 440,501.42

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Solution

The fourth proportional to 668,922.64, 923,880.15 and 440,501.42 is: 608,396.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,922.64 : 923,880.15 = 440,501.42 : x
  2. Step 2: Convert to fraction form
    668,922.64/923,880.15 = 440,501.42/x
  3. Step 3: Cross multiply
    668,922.64x = 923,880.15 × 440,501.42
  4. Step 4: Simplify right side
    668,922.64x = 406,970,520,294.51
  5. Step 5: Solve for x
    x = 406,970,520,294.51/668,922.64
  6. Step 6: Final answer
    x = 608,396.99

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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.