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Finding the Fourth Proportional to 316,712.16, 475,056.72 and 95,090.40

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Solution

The fourth proportional to 316,712.16, 475,056.72 and 95,090.40 is: 142,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,712.16 : 475,056.72 = 95,090.40 : x
  2. Step 2: Convert to fraction form
    316,712.16/475,056.72 = 95,090.40/x
  3. Step 3: Cross multiply
    316,712.16x = 475,056.72 × 95,090.40
  4. Step 4: Simplify right side
    316,712.16x = 45,173,333,527.49
  5. Step 5: Solve for x
    x = 45,173,333,527.49/316,712.16
  6. Step 6: Final answer
    x = 142,632.14

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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.