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Finding the Fourth Proportional to 738,123.10, 1,105,435.05 and 738,123.10

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Solution

The fourth proportional to 738,123.10, 1,105,435.05 and 738,123.10 is: 1,105,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,123.10 : 1,105,435.05 = 738,123.10 : x
  2. Step 2: Convert to fraction form
    738,123.10/1,105,435.05 = 738,123.10/x
  3. Step 3: Cross multiply
    738,123.10x = 1,105,435.05 × 738,123.10
  4. Step 4: Simplify right side
    738,123.10x = 815,947,145,954.66
  5. Step 5: Solve for x
    x = 815,947,145,954.66/738,123.10
  6. Step 6: Final answer
    x = 1,105,435.05

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Double scale
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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.