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Finding the Fourth Proportional to 584,897.40, 876,908.70 and 318,958.20

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Solution

The fourth proportional to 584,897.40, 876,908.70 and 318,958.20 is: 478,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,897.40 : 876,908.70 = 318,958.20 : x
  2. Step 2: Convert to fraction form
    584,897.40/876,908.70 = 318,958.20/x
  3. Step 3: Cross multiply
    584,897.40x = 876,908.70 × 318,958.20
  4. Step 4: Simplify right side
    584,897.40x = 279,697,220,516.34
  5. Step 5: Solve for x
    x = 279,697,220,516.34/584,897.40
  6. Step 6: Final answer
    x = 478,198.78

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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.