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Finding the Fourth Proportional to 717,404.80, 989,945.40 and 441,718.88

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Solution

The fourth proportional to 717,404.80, 989,945.40 and 441,718.88 is: 609,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,404.80 : 989,945.40 = 441,718.88 : x
  2. Step 2: Convert to fraction form
    717,404.80/989,945.40 = 441,718.88/x
  3. Step 3: Cross multiply
    717,404.80x = 989,945.40 × 441,718.88
  4. Step 4: Simplify right side
    717,404.80x = 437,277,573,349.15
  5. Step 5: Solve for x
    x = 437,277,573,349.15/717,404.80
  6. Step 6: Final answer
    x = 609,526.97

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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.