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Finding the Fourth Proportional to 584,768.40, 876,715.20 and 318,829.20

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Solution

The fourth proportional to 584,768.40, 876,715.20 and 318,829.20 is: 478,005.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,768.40 : 876,715.20 = 318,829.20 : x
  2. Step 2: Convert to fraction form
    584,768.40/876,715.20 = 318,829.20/x
  3. Step 3: Cross multiply
    584,768.40x = 876,715.20 × 318,829.20
  4. Step 4: Simplify right side
    584,768.40x = 279,522,405,843.84
  5. Step 5: Solve for x
    x = 279,522,405,843.84/584,768.40
  6. Step 6: Final answer
    x = 478,005.32

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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.