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Finding the Fourth Proportional to 606,917.70, 910,376.55 and 417,960.90

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Solution

The fourth proportional to 606,917.70, 910,376.55 and 417,960.90 is: 626,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,917.70 : 910,376.55 = 417,960.90 : x
  2. Step 2: Convert to fraction form
    606,917.70/910,376.55 = 417,960.90/x
  3. Step 3: Cross multiply
    606,917.70x = 910,376.55 × 417,960.90
  4. Step 4: Simplify right side
    606,917.70x = 380,501,802,176.90
  5. Step 5: Solve for x
    x = 380,501,802,176.90/606,917.70
  6. Step 6: Final answer
    x = 626,941.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.