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Finding the Fourth Proportional to 626,920.56, 865,740.84 and 436,454.76

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Solution

The fourth proportional to 626,920.56, 865,740.84 and 436,454.76 is: 602,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,920.56 : 865,740.84 = 436,454.76 : x
  2. Step 2: Convert to fraction form
    626,920.56/865,740.84 = 436,454.76/x
  3. Step 3: Cross multiply
    626,920.56x = 865,740.84 × 436,454.76
  4. Step 4: Simplify right side
    626,920.56x = 377,856,710,544.40
  5. Step 5: Solve for x
    x = 377,856,710,544.40/626,920.56
  6. Step 6: Final answer
    x = 602,718.65

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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.