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Finding the Fourth Proportional to 530,147.70, 795,221.55 and 495,155.70

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Solution

The fourth proportional to 530,147.70, 795,221.55 and 495,155.70 is: 742,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,147.70 : 795,221.55 = 495,155.70 : x
  2. Step 2: Convert to fraction form
    530,147.70/795,221.55 = 495,155.70/x
  3. Step 3: Cross multiply
    530,147.70x = 795,221.55 × 495,155.70
  4. Step 4: Simplify right side
    530,147.70x = 393,758,483,245.34
  5. Step 5: Solve for x
    x = 393,758,483,245.34/530,147.70
  6. Step 6: Final answer
    x = 742,733.55

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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.