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Finding the Fourth Proportional to 518,057.51, 714,941.43 and 288,614.67

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Solution

The fourth proportional to 518,057.51, 714,941.43 and 288,614.67 is: 398,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,057.51 : 714,941.43 = 288,614.67 : x
  2. Step 2: Convert to fraction form
    518,057.51/714,941.43 = 288,614.67/x
  3. Step 3: Cross multiply
    518,057.51x = 714,941.43 × 288,614.67
  4. Step 4: Simplify right side
    518,057.51x = 206,342,579,871.00
  5. Step 5: Solve for x
    x = 206,342,579,871.00/518,057.51
  6. Step 6: Final answer
    x = 398,300.53

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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.