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Finding the Fourth Proportional to 621,570.41, 857,775.93 and 366,921.53

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Solution

The fourth proportional to 621,570.41, 857,775.93 and 366,921.53 is: 506,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,570.41 : 857,775.93 = 366,921.53 : x
  2. Step 2: Convert to fraction form
    621,570.41/857,775.93 = 366,921.53/x
  3. Step 3: Cross multiply
    621,570.41x = 857,775.93 × 366,921.53
  4. Step 4: Simplify right side
    621,570.41x = 314,736,456,632.77
  5. Step 5: Solve for x
    x = 314,736,456,632.77/621,570.41
  6. Step 6: Final answer
    x = 506,356.89

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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.