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Finding the Fourth Proportional to 666,892.85, 920,060.91 and 437,576.72

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Solution

The fourth proportional to 666,892.85, 920,060.91 and 437,576.72 is: 603,691.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,892.85 : 920,060.91 = 437,576.72 : x
  2. Step 2: Convert to fraction form
    666,892.85/920,060.91 = 437,576.72/x
  3. Step 3: Cross multiply
    666,892.85x = 920,060.91 × 437,576.72
  4. Step 4: Simplify right side
    666,892.85x = 402,597,230,597.71
  5. Step 5: Solve for x
    x = 402,597,230,597.71/666,892.85
  6. Step 6: Final answer
    x = 603,691.03

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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.