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Finding the Fourth Proportional to 545,618.33, 817,030.07 and 455,436.81

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Solution

The fourth proportional to 545,618.33, 817,030.07 and 455,436.81 is: 681,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,618.33 : 817,030.07 = 455,436.81 : x
  2. Step 2: Convert to fraction form
    545,618.33/817,030.07 = 455,436.81/x
  3. Step 3: Cross multiply
    545,618.33x = 817,030.07 × 455,436.81
  4. Step 4: Simplify right side
    545,618.33x = 372,105,566,477.69
  5. Step 5: Solve for x
    x = 372,105,566,477.69/545,618.33
  6. Step 6: Final answer
    x = 681,988.76

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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.