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Finding the Fourth Proportional to 524,690.40, 786,128.40 and 243,631.20

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Solution

The fourth proportional to 524,690.40, 786,128.40 and 243,631.20 is: 365,025.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,690.40 : 786,128.40 = 243,631.20 : x
  2. Step 2: Convert to fraction form
    524,690.40/786,128.40 = 243,631.20/x
  3. Step 3: Cross multiply
    524,690.40x = 786,128.40 × 243,631.20
  4. Step 4: Simplify right side
    524,690.40x = 191,525,405,446.08
  5. Step 5: Solve for x
    x = 191,525,405,446.08/524,690.40
  6. Step 6: Final answer
    x = 365,025.56

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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.