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Finding the Fourth Proportional to 647,943.38, 894,051.12 and 375,948.92

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Solution

The fourth proportional to 647,943.38, 894,051.12 and 375,948.92 is: 518,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,943.38 : 894,051.12 = 375,948.92 : x
  2. Step 2: Convert to fraction form
    647,943.38/894,051.12 = 375,948.92/x
  3. Step 3: Cross multiply
    647,943.38x = 894,051.12 × 375,948.92
  4. Step 4: Simplify right side
    647,943.38x = 336,117,552,988.79
  5. Step 5: Solve for x
    x = 336,117,552,988.79/647,943.38
  6. Step 6: Final answer
    x = 518,745.25

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Double scale
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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.