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Finding the Fourth Proportional to 561,545.41, 841,980.96 and 257,558.78

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Solution

The fourth proportional to 561,545.41, 841,980.96 and 257,558.78 is: 386,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,545.41 : 841,980.96 = 257,558.78 : x
  2. Step 2: Convert to fraction form
    561,545.41/841,980.96 = 257,558.78/x
  3. Step 3: Cross multiply
    561,545.41x = 841,980.96 × 257,558.78
  4. Step 4: Simplify right side
    561,545.41x = 216,859,588,840.83
  5. Step 5: Solve for x
    x = 216,859,588,840.83/561,545.41
  6. Step 6: Final answer
    x = 386,183.53

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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.