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Finding the Fourth Proportional to 742,149.70, 1,041,109.10 and 742,149.70

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Solution

The fourth proportional to 742,149.70, 1,041,109.10 and 742,149.70 is: 1,041,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,149.70 : 1,041,109.10 = 742,149.70 : x
  2. Step 2: Convert to fraction form
    742,149.70/1,041,109.10 = 742,149.70/x
  3. Step 3: Cross multiply
    742,149.70x = 1,041,109.10 × 742,149.70
  4. Step 4: Simplify right side
    742,149.70x = 772,658,806,232.27
  5. Step 5: Solve for x
    x = 772,658,806,232.27/742,149.70
  6. Step 6: Final answer
    x = 1,041,109.10

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.