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Finding the Fourth Proportional to 315,557.16, 473,160.78 and 105,080.28

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Solution

The fourth proportional to 315,557.16, 473,160.78 and 105,080.28 is: 157,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,557.16 : 473,160.78 = 105,080.28 : x
  2. Step 2: Convert to fraction form
    315,557.16/473,160.78 = 105,080.28/x
  3. Step 3: Cross multiply
    315,557.16x = 473,160.78 × 105,080.28
  4. Step 4: Simplify right side
    315,557.16x = 49,719,867,247.42
  5. Step 5: Solve for x
    x = 49,719,867,247.42/315,557.16
  6. Step 6: Final answer
    x = 157,562.16

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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.