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Finding the Fourth Proportional to 646,867.30, 970,300.95 and 366,931.30

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Solution

The fourth proportional to 646,867.30, 970,300.95 and 366,931.30 is: 550,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,867.30 : 970,300.95 = 366,931.30 : x
  2. Step 2: Convert to fraction form
    646,867.30/970,300.95 = 366,931.30/x
  3. Step 3: Cross multiply
    646,867.30x = 970,300.95 × 366,931.30
  4. Step 4: Simplify right side
    646,867.30x = 356,033,788,974.74
  5. Step 5: Solve for x
    x = 356,033,788,974.74/646,867.30
  6. Step 6: Final answer
    x = 550,396.95

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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.