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Finding the Fourth Proportional to 615,005.31, 848,708.58 and 343,066.14

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Solution

The fourth proportional to 615,005.31, 848,708.58 and 343,066.14 is: 473,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,005.31 : 848,708.58 = 343,066.14 : x
  2. Step 2: Convert to fraction form
    615,005.31/848,708.58 = 343,066.14/x
  3. Step 3: Cross multiply
    615,005.31x = 848,708.58 × 343,066.14
  4. Step 4: Simplify right side
    615,005.31x = 291,163,176,525.48
  5. Step 5: Solve for x
    x = 291,163,176,525.48/615,005.31
  6. Step 6: Final answer
    x = 473,431.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.