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Finding the Fourth Proportional to 676,138.75, 933,068.05 and 370,209.57

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Solution

The fourth proportional to 676,138.75, 933,068.05 and 370,209.57 is: 510,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,138.75 : 933,068.05 = 370,209.57 : x
  2. Step 2: Convert to fraction form
    676,138.75/933,068.05 = 370,209.57/x
  3. Step 3: Cross multiply
    676,138.75x = 933,068.05 × 370,209.57
  4. Step 4: Simplify right side
    676,138.75x = 345,430,720,645.72
  5. Step 5: Solve for x
    x = 345,430,720,645.72/676,138.75
  6. Step 6: Final answer
    x = 510,887.33

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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.