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Finding the Fourth Proportional to 654,702.94, 903,614.42 and 409,801.32

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Solution

The fourth proportional to 654,702.94, 903,614.42 and 409,801.32 is: 565,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,702.94 : 903,614.42 = 409,801.32 : x
  2. Step 2: Convert to fraction form
    654,702.94/903,614.42 = 409,801.32/x
  3. Step 3: Cross multiply
    654,702.94x = 903,614.42 × 409,801.32
  4. Step 4: Simplify right side
    654,702.94x = 370,302,379,993.84
  5. Step 5: Solve for x
    x = 370,302,379,993.84/654,702.94
  6. Step 6: Final answer
    x = 565,603.66

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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.