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Finding the Fourth Proportional to 626,835.88, 865,009.25 and 340,349.40

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Solution

The fourth proportional to 626,835.88, 865,009.25 and 340,349.40 is: 469,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,835.88 : 865,009.25 = 340,349.40 : x
  2. Step 2: Convert to fraction form
    626,835.88/865,009.25 = 340,349.40/x
  3. Step 3: Cross multiply
    626,835.88x = 865,009.25 × 340,349.40
  4. Step 4: Simplify right side
    626,835.88x = 294,405,379,231.95
  5. Step 5: Solve for x
    x = 294,405,379,231.95/626,835.88
  6. Step 6: Final answer
    x = 469,669.00

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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.