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Finding the Fourth Proportional to 98,598.43, 136,072.95 and 56,156.95

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Solution

The fourth proportional to 98,598.43, 136,072.95 and 56,156.95 is: 77,500.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,598.43 : 136,072.95 = 56,156.95 : x
  2. Step 2: Convert to fraction form
    98,598.43/136,072.95 = 56,156.95/x
  3. Step 3: Cross multiply
    98,598.43x = 136,072.95 × 56,156.95
  4. Step 4: Simplify right side
    98,598.43x = 7,641,441,849.50
  5. Step 5: Solve for x
    x = 7,641,441,849.50/98,598.43
  6. Step 6: Final answer
    x = 77,500.64

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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.