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Finding the Fourth Proportional to 586,085.72, 808,923.92 and 381,772.09

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Solution

The fourth proportional to 586,085.72, 808,923.92 and 381,772.09 is: 526,927.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,085.72 : 808,923.92 = 381,772.09 : x
  2. Step 2: Convert to fraction form
    586,085.72/808,923.92 = 381,772.09/x
  3. Step 3: Cross multiply
    586,085.72x = 808,923.92 × 381,772.09
  4. Step 4: Simplify right side
    586,085.72x = 308,824,571,658.22
  5. Step 5: Solve for x
    x = 308,824,571,658.22/586,085.72
  6. Step 6: Final answer
    x = 526,927.31

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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.