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Finding the Fourth Proportional to 191,955.47, 287,933.20 and 98,401.55

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Solution

The fourth proportional to 191,955.47, 287,933.20 and 98,401.55 is: 147,602.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,955.47 : 287,933.20 = 98,401.55 : x
  2. Step 2: Convert to fraction form
    191,955.47/287,933.20 = 98,401.55/x
  3. Step 3: Cross multiply
    191,955.47x = 287,933.20 × 98,401.55
  4. Step 4: Simplify right side
    191,955.47x = 28,333,071,490.79
  5. Step 5: Solve for x
    x = 28,333,071,490.79/191,955.47
  6. Step 6: Final answer
    x = 147,602.32

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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.