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Finding the Fourth Proportional to 464,905.30, 697,357.95 and 127,945.30

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Solution

The fourth proportional to 464,905.30, 697,357.95 and 127,945.30 is: 191,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,905.30 : 697,357.95 = 127,945.30 : x
  2. Step 2: Convert to fraction form
    464,905.30/697,357.95 = 127,945.30/x
  3. Step 3: Cross multiply
    464,905.30x = 697,357.95 × 127,945.30
  4. Step 4: Simplify right side
    464,905.30x = 89,223,672,120.14
  5. Step 5: Solve for x
    x = 89,223,672,120.14/464,905.30
  6. Step 6: Final answer
    x = 191,917.95

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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.