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Finding the Fourth Proportional to 678,387.19, 936,176.18 and 372,483.39

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Solution

The fourth proportional to 678,387.19, 936,176.18 and 372,483.39 is: 514,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,387.19 : 936,176.18 = 372,483.39 : x
  2. Step 2: Convert to fraction form
    678,387.19/936,176.18 = 372,483.39/x
  3. Step 3: Cross multiply
    678,387.19x = 936,176.18 × 372,483.39
  4. Step 4: Simplify right side
    678,387.19x = 348,710,077,163.65
  5. Step 5: Solve for x
    x = 348,710,077,163.65/678,387.19
  6. Step 6: Final answer
    x = 514,028.10

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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.