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Finding the Fourth Proportional to 144,478.85, 216,681.01 and 43,256.93

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Solution

The fourth proportional to 144,478.85, 216,681.01 and 43,256.93 is: 64,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,478.85 : 216,681.01 = 43,256.93 : x
  2. Step 2: Convert to fraction form
    144,478.85/216,681.01 = 43,256.93/x
  3. Step 3: Cross multiply
    144,478.85x = 216,681.01 × 43,256.93
  4. Step 4: Simplify right side
    144,478.85x = 9,372,954,090.35
  5. Step 5: Solve for x
    x = 9,372,954,090.35/144,478.85
  6. Step 6: Final answer
    x = 64,874.23

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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.