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Finding the Fourth Proportional to 150,547.88, 207,762.54 and 86,885.48

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Solution

The fourth proportional to 150,547.88, 207,762.54 and 86,885.48 is: 119,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,547.88 : 207,762.54 = 86,885.48 : x
  2. Step 2: Convert to fraction form
    150,547.88/207,762.54 = 86,885.48/x
  3. Step 3: Cross multiply
    150,547.88x = 207,762.54 × 86,885.48
  4. Step 4: Simplify right side
    150,547.88x = 18,051,548,013.92
  5. Step 5: Solve for x
    x = 18,051,548,013.92/150,547.88
  6. Step 6: Final answer
    x = 119,905.69

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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.