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Finding the Fourth Proportional to 144,878.51, 217,316.70 and 45,038.52

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Solution

The fourth proportional to 144,878.51, 217,316.70 and 45,038.52 is: 67,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,878.51 : 217,316.70 = 45,038.52 : x
  2. Step 2: Convert to fraction form
    144,878.51/217,316.70 = 45,038.52/x
  3. Step 3: Cross multiply
    144,878.51x = 217,316.70 × 45,038.52
  4. Step 4: Simplify right side
    144,878.51x = 9,787,622,539.28
  5. Step 5: Solve for x
    x = 9,787,622,539.28/144,878.51
  6. Step 6: Final answer
    x = 67,557.45

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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.