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Finding the Fourth Proportional to 328,334.53, 453,172.10 and 207,398.89

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Solution

The fourth proportional to 328,334.53, 453,172.10 and 207,398.89 is: 286,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,334.53 : 453,172.10 = 207,398.89 : x
  2. Step 2: Convert to fraction form
    328,334.53/453,172.10 = 207,398.89/x
  3. Step 3: Cross multiply
    328,334.53x = 453,172.10 × 207,398.89
  4. Step 4: Simplify right side
    328,334.53x = 93,987,390,518.97
  5. Step 5: Solve for x
    x = 93,987,390,518.97/328,334.53
  6. Step 6: Final answer
    x = 286,254.97

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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.