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Finding the Fourth Proportional to 570,565.12, 855,931.11 and 171,237.45

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Solution

The fourth proportional to 570,565.12, 855,931.11 and 171,237.45 is: 256,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,565.12 : 855,931.11 = 171,237.45 : x
  2. Step 2: Convert to fraction form
    570,565.12/855,931.11 = 171,237.45/x
  3. Step 3: Cross multiply
    570,565.12x = 855,931.11 × 171,237.45
  4. Step 4: Simplify right side
    570,565.12x = 146,567,456,800.19
  5. Step 5: Solve for x
    x = 146,567,456,800.19/570,565.12
  6. Step 6: Final answer
    x = 256,881.21

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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.