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Finding the Fourth Proportional to 563,287.48, 777,337.19 and 308,638.67

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Solution

The fourth proportional to 563,287.48, 777,337.19 and 308,638.67 is: 425,921.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,287.48 : 777,337.19 = 308,638.67 : x
  2. Step 2: Convert to fraction form
    563,287.48/777,337.19 = 308,638.67/x
  3. Step 3: Cross multiply
    563,287.48x = 777,337.19 × 308,638.67
  4. Step 4: Simplify right side
    563,287.48x = 239,916,312,190.65
  5. Step 5: Solve for x
    x = 239,916,312,190.65/563,287.48
  6. Step 6: Final answer
    x = 425,921.62

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1.5x scale

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.