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Finding the Fourth Proportional to 542,191.14, 812,538.72 and 391,228.56

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Solution

The fourth proportional to 542,191.14, 812,538.72 and 391,228.56 is: 586,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,191.14 : 812,538.72 = 391,228.56 : x
  2. Step 2: Convert to fraction form
    542,191.14/812,538.72 = 391,228.56/x
  3. Step 3: Cross multiply
    542,191.14x = 812,538.72 × 391,228.56
  4. Step 4: Simplify right side
    542,191.14x = 317,888,353,369.84
  5. Step 5: Solve for x
    x = 317,888,353,369.84/542,191.14
  6. Step 6: Final answer
    x = 586,303.11

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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.