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Finding the Fourth Proportional to 114,700.80, 172,051.20 and 72,710.40

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Solution

The fourth proportional to 114,700.80, 172,051.20 and 72,710.40 is: 109,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,700.80 : 172,051.20 = 72,710.40 : x
  2. Step 2: Convert to fraction form
    114,700.80/172,051.20 = 72,710.40/x
  3. Step 3: Cross multiply
    114,700.80x = 172,051.20 × 72,710.40
  4. Step 4: Simplify right side
    114,700.80x = 12,509,911,572.48
  5. Step 5: Solve for x
    x = 12,509,911,572.48/114,700.80
  6. Step 6: Final answer
    x = 109,065.60

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