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Finding the Fourth Proportional to 124,395.97, 186,320.45 and 102,803.98

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Solution

The fourth proportional to 124,395.97, 186,320.45 and 102,803.98 is: 153,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,395.97 : 186,320.45 = 102,803.98 : x
  2. Step 2: Convert to fraction form
    124,395.97/186,320.45 = 102,803.98/x
  3. Step 3: Cross multiply
    124,395.97x = 186,320.45 × 102,803.98
  4. Step 4: Simplify right side
    124,395.97x = 19,154,482,835.57
  5. Step 5: Solve for x
    x = 19,154,482,835.57/124,395.97
  6. Step 6: Final answer
    x = 153,979.93

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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.