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Finding the Fourth Proportional to 530,783.35, 732,475.92 and 289,069.96

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Solution

The fourth proportional to 530,783.35, 732,475.92 and 289,069.96 is: 398,913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,783.35 : 732,475.92 = 289,069.96 : x
  2. Step 2: Convert to fraction form
    530,783.35/732,475.92 = 289,069.96/x
  3. Step 3: Cross multiply
    530,783.35x = 732,475.92 × 289,069.96
  4. Step 4: Simplify right side
    530,783.35x = 211,736,781,232.98
  5. Step 5: Solve for x
    x = 211,736,781,232.98/530,783.35
  6. Step 6: Final answer
    x = 398,913.76

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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.