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Finding the Fourth Proportional to 626,939.96, 865,441.98 and 423,266.74

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Solution

The fourth proportional to 626,939.96, 865,441.98 and 423,266.74 is: 584,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,939.96 : 865,441.98 = 423,266.74 : x
  2. Step 2: Convert to fraction form
    626,939.96/865,441.98 = 423,266.74/x
  3. Step 3: Cross multiply
    626,939.96x = 865,441.98 × 423,266.74
  4. Step 4: Simplify right side
    626,939.96x = 366,312,805,533.75
  5. Step 5: Solve for x
    x = 366,312,805,533.75/626,939.96
  6. Step 6: Final answer
    x = 584,286.90

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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.