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Finding the Fourth Proportional to 542,217.51, 812,221.83 and 257,043.69

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Solution

The fourth proportional to 542,217.51, 812,221.83 and 257,043.69 is: 385,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,217.51 : 812,221.83 = 257,043.69 : x
  2. Step 2: Convert to fraction form
    542,217.51/812,221.83 = 257,043.69/x
  3. Step 3: Cross multiply
    542,217.51x = 812,221.83 × 257,043.69
  4. Step 4: Simplify right side
    542,217.51x = 208,776,496,281.75
  5. Step 5: Solve for x
    x = 208,776,496,281.75/542,217.51
  6. Step 6: Final answer
    x = 385,041.97

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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.