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Finding the Fourth Proportional to 520,011.96, 780,095.70 and 220,493.40

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Solution

The fourth proportional to 520,011.96, 780,095.70 and 220,493.40 is: 330,773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,011.96 : 780,095.70 = 220,493.40 : x
  2. Step 2: Convert to fraction form
    520,011.96/780,095.70 = 220,493.40/x
  3. Step 3: Cross multiply
    520,011.96x = 780,095.70 × 220,493.40
  4. Step 4: Simplify right side
    520,011.96x = 172,005,953,218.38
  5. Step 5: Solve for x
    x = 172,005,953,218.38/520,011.96
  6. Step 6: Final answer
    x = 330,773.07

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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.