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Finding the Fourth Proportional to 561,544.41, 841,979.47 and 257,557.78

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Solution

The fourth proportional to 561,544.41, 841,979.47 and 257,557.78 is: 386,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,544.41 : 841,979.47 = 257,557.78 : x
  2. Step 2: Convert to fraction form
    561,544.41/841,979.47 = 257,557.78/x
  3. Step 3: Cross multiply
    561,544.41x = 841,979.47 × 257,557.78
  4. Step 4: Simplify right side
    561,544.41x = 216,858,357,601.09
  5. Step 5: Solve for x
    x = 216,858,357,601.09/561,544.41
  6. Step 6: Final answer
    x = 386,182.03

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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.