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Finding the Fourth Proportional to 666,893.34, 920,312.82 and 365,087.34

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Solution

The fourth proportional to 666,893.34, 920,312.82 and 365,087.34 is: 503,820.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,893.34 : 920,312.82 = 365,087.34 : x
  2. Step 2: Convert to fraction form
    666,893.34/920,312.82 = 365,087.34/x
  3. Step 3: Cross multiply
    666,893.34x = 920,312.82 × 365,087.34
  4. Step 4: Simplify right side
    666,893.34x = 335,994,559,421.70
  5. Step 5: Solve for x
    x = 335,994,559,421.70/666,893.34
  6. Step 6: Final answer
    x = 503,820.54

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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.