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Finding the Fourth Proportional to 606,945.20, 910,417.80 and 186,220.40

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Solution

The fourth proportional to 606,945.20, 910,417.80 and 186,220.40 is: 279,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,945.20 : 910,417.80 = 186,220.40 : x
  2. Step 2: Convert to fraction form
    606,945.20/910,417.80 = 186,220.40/x
  3. Step 3: Cross multiply
    606,945.20x = 910,417.80 × 186,220.40
  4. Step 4: Simplify right side
    606,945.20x = 169,538,366,883.12
  5. Step 5: Solve for x
    x = 169,538,366,883.12/606,945.20
  6. Step 6: Final answer
    x = 279,330.60

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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.