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Finding the Fourth Proportional to 325,429.60, 487,386.24 and 316,460.48

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Solution

The fourth proportional to 325,429.60, 487,386.24 and 316,460.48 is: 473,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,429.60 : 487,386.24 = 316,460.48 : x
  2. Step 2: Convert to fraction form
    325,429.60/487,386.24 = 316,460.48/x
  3. Step 3: Cross multiply
    325,429.60x = 487,386.24 × 316,460.48
  4. Step 4: Simplify right side
    325,429.60x = 154,238,483,455.80
  5. Step 5: Solve for x
    x = 154,238,483,455.80/325,429.60
  6. Step 6: Final answer
    x = 473,953.46

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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.