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Finding the Fourth Proportional to 280,356.45, 386,891.80 and 153,032.04

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Solution

The fourth proportional to 280,356.45, 386,891.80 and 153,032.04 is: 211,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,356.45 : 386,891.80 = 153,032.04 : x
  2. Step 2: Convert to fraction form
    280,356.45/386,891.80 = 153,032.04/x
  3. Step 3: Cross multiply
    280,356.45x = 386,891.80 × 153,032.04
  4. Step 4: Simplify right side
    280,356.45x = 59,206,841,030.69
  5. Step 5: Solve for x
    x = 59,206,841,030.69/280,356.45
  6. Step 6: Final answer
    x = 211,184.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.