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Finding the Fourth Proportional to 522,000.60, 783,000.90 and 369,785.40

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Solution

The fourth proportional to 522,000.60, 783,000.90 and 369,785.40 is: 554,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,000.60 : 783,000.90 = 369,785.40 : x
  2. Step 2: Convert to fraction form
    522,000.60/783,000.90 = 369,785.40/x
  3. Step 3: Cross multiply
    522,000.60x = 783,000.90 × 369,785.40
  4. Step 4: Simplify right side
    522,000.60x = 289,542,301,006.86
  5. Step 5: Solve for x
    x = 289,542,301,006.86/522,000.60
  6. Step 6: Final answer
    x = 554,678.10

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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.