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Finding the Fourth Proportional to 117,159.69, 175,703.20 and 42,270.11

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Solution

The fourth proportional to 117,159.69, 175,703.20 and 42,270.11 is: 63,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,159.69 : 175,703.20 = 42,270.11 : x
  2. Step 2: Convert to fraction form
    117,159.69/175,703.20 = 42,270.11/x
  3. Step 3: Cross multiply
    117,159.69x = 175,703.20 × 42,270.11
  4. Step 4: Simplify right side
    117,159.69x = 7,426,992,607.16
  5. Step 5: Solve for x
    x = 7,426,992,607.16/117,159.69
  6. Step 6: Final answer
    x = 63,392.05

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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.