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Finding the Fourth Proportional to 522,038.40, 783,057.60 and 353,639.40

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Solution

The fourth proportional to 522,038.40, 783,057.60 and 353,639.40 is: 530,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,038.40 : 783,057.60 = 353,639.40 : x
  2. Step 2: Convert to fraction form
    522,038.40/783,057.60 = 353,639.40/x
  3. Step 3: Cross multiply
    522,038.40x = 783,057.60 × 353,639.40
  4. Step 4: Simplify right side
    522,038.40x = 276,920,019,829.44
  5. Step 5: Solve for x
    x = 276,920,019,829.44/522,038.40
  6. Step 6: Final answer
    x = 530,459.10

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