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Finding the Fourth Proportional to 572,603.40, 858,905.10 and 151,921.80

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Solution

The fourth proportional to 572,603.40, 858,905.10 and 151,921.80 is: 227,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,603.40 : 858,905.10 = 151,921.80 : x
  2. Step 2: Convert to fraction form
    572,603.40/858,905.10 = 151,921.80/x
  3. Step 3: Cross multiply
    572,603.40x = 858,905.10 × 151,921.80
  4. Step 4: Simplify right side
    572,603.40x = 130,486,408,821.18
  5. Step 5: Solve for x
    x = 130,486,408,821.18/572,603.40
  6. Step 6: Final answer
    x = 227,882.70

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Half scale
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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.