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Finding the Fourth Proportional to 315,061.40, 472,428.90 and 93,416.60

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Solution

The fourth proportional to 315,061.40, 472,428.90 and 93,416.60 is: 140,076.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,061.40 : 472,428.90 = 93,416.60 : x
  2. Step 2: Convert to fraction form
    315,061.40/472,428.90 = 93,416.60/x
  3. Step 3: Cross multiply
    315,061.40x = 472,428.90 × 93,416.60
  4. Step 4: Simplify right side
    315,061.40x = 44,132,701,579.74
  5. Step 5: Solve for x
    x = 44,132,701,579.74/315,061.40
  6. Step 6: Final answer
    x = 140,076.51

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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.