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Finding the Fourth Proportional to 559,608.84, 772,234.02 and 317,885.40

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Solution

The fourth proportional to 559,608.84, 772,234.02 and 317,885.40 is: 438,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,608.84 : 772,234.02 = 317,885.40 : x
  2. Step 2: Convert to fraction form
    559,608.84/772,234.02 = 317,885.40/x
  3. Step 3: Cross multiply
    559,608.84x = 772,234.02 × 317,885.40
  4. Step 4: Simplify right side
    559,608.84x = 245,481,920,341.31
  5. Step 5: Solve for x
    x = 245,481,920,341.31/559,608.84
  6. Step 6: Final answer
    x = 438,666.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.