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Finding the Fourth Proportional to 605,126.40, 907,689.60 and 155,846.40

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Solution

The fourth proportional to 605,126.40, 907,689.60 and 155,846.40 is: 233,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,126.40 : 907,689.60 = 155,846.40 : x
  2. Step 2: Convert to fraction form
    605,126.40/907,689.60 = 155,846.40/x
  3. Step 3: Cross multiply
    605,126.40x = 907,689.60 × 155,846.40
  4. Step 4: Simplify right side
    605,126.40x = 141,460,156,477.44
  5. Step 5: Solve for x
    x = 141,460,156,477.44/605,126.40
  6. Step 6: Final answer
    x = 233,769.60

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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.