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Finding the Fourth Proportional to 533,039.74, 803,155.95 and 440,346.48

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Solution

The fourth proportional to 533,039.74, 803,155.95 and 440,346.48 is: 663,490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,039.74 : 803,155.95 = 440,346.48 : x
  2. Step 2: Convert to fraction form
    533,039.74/803,155.95 = 440,346.48/x
  3. Step 3: Cross multiply
    533,039.74x = 803,155.95 × 440,346.48
  4. Step 4: Simplify right side
    533,039.74x = 353,666,895,473.56
  5. Step 5: Solve for x
    x = 353,666,895,473.56/533,039.74
  6. Step 6: Final answer
    x = 663,490.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.