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Finding the Fourth Proportional to 618,921.66, 928,451.88 and 555,350.94

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Solution

The fourth proportional to 618,921.66, 928,451.88 and 555,350.94 is: 833,088.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,921.66 : 928,451.88 = 555,350.94 : x
  2. Step 2: Convert to fraction form
    618,921.66/928,451.88 = 555,350.94/x
  3. Step 3: Cross multiply
    618,921.66x = 928,451.88 × 555,350.94
  4. Step 4: Simplify right side
    618,921.66x = 515,616,624,302.77
  5. Step 5: Solve for x
    x = 515,616,624,302.77/618,921.66
  6. Step 6: Final answer
    x = 833,088.67

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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.