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Finding the Fourth Proportional to 315,316.80, 472,975.20 and 93,700.80

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Solution

The fourth proportional to 315,316.80, 472,975.20 and 93,700.80 is: 140,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,316.80 : 472,975.20 = 93,700.80 : x
  2. Step 2: Convert to fraction form
    315,316.80/472,975.20 = 93,700.80/x
  3. Step 3: Cross multiply
    315,316.80x = 472,975.20 × 93,700.80
  4. Step 4: Simplify right side
    315,316.80x = 44,318,154,620.16
  5. Step 5: Solve for x
    x = 44,318,154,620.16/315,316.80
  6. Step 6: Final answer
    x = 140,551.20

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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.