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Finding the Fourth Proportional to 668,692.88, 923,113.80 and 423,799.91

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Solution

The fourth proportional to 668,692.88, 923,113.80 and 423,799.91 is: 585,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,692.88 : 923,113.80 = 423,799.91 : x
  2. Step 2: Convert to fraction form
    668,692.88/923,113.80 = 423,799.91/x
  3. Step 3: Cross multiply
    668,692.88x = 923,113.80 × 423,799.91
  4. Step 4: Simplify right side
    668,692.88x = 391,215,545,359.76
  5. Step 5: Solve for x
    x = 391,215,545,359.76/668,692.88
  6. Step 6: Final answer
    x = 585,045.18

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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.