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Finding the Fourth Proportional to 315,056.64, 472,610.56 and 93,440

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Solution

The fourth proportional to 315,056.64, 472,610.56 and 93,440 is: 140,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,056.64 : 472,610.56 = 93,440 : x
  2. Step 2: Convert to fraction form
    315,056.64/472,610.56 = 93,440/x
  3. Step 3: Cross multiply
    315,056.64x = 472,610.56 × 93,440
  4. Step 4: Simplify right side
    315,056.64x = 44,160,730,726.40
  5. Step 5: Solve for x
    x = 44,160,730,726.40/315,056.64
  6. Step 6: Final answer
    x = 140,167.59

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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.