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Finding the Fourth Proportional to 853,395.11, 1,280,088.03 and 347,954.12

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Solution

The fourth proportional to 853,395.11, 1,280,088.03 and 347,954.12 is: 521,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,395.11 : 1,280,088.03 = 347,954.12 : x
  2. Step 2: Convert to fraction form
    853,395.11/1,280,088.03 = 347,954.12/x
  3. Step 3: Cross multiply
    853,395.11x = 1,280,088.03 × 347,954.12
  4. Step 4: Simplify right side
    853,395.11x = 445,411,897,600.74
  5. Step 5: Solve for x
    x = 445,411,897,600.74/853,395.11
  6. Step 6: Final answer
    x = 521,929.29

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1.5x scale

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.