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Finding the Fourth Proportional to 678,655.59, 936,544.53 and 372,732.04

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Solution

The fourth proportional to 678,655.59, 936,544.53 and 372,732.04 is: 514,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,655.59 : 936,544.53 = 372,732.04 : x
  2. Step 2: Convert to fraction form
    678,655.59/936,544.53 = 372,732.04/x
  3. Step 3: Cross multiply
    678,655.59x = 936,544.53 × 372,732.04
  4. Step 4: Simplify right side
    678,655.59x = 349,080,153,217.74
  5. Step 5: Solve for x
    x = 349,080,153,217.74/678,655.59
  6. Step 6: Final answer
    x = 514,370.11

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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.