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Finding the Fourth Proportional to 94,239.71, 130,069.71 and 55,991.90

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Solution

The fourth proportional to 94,239.71, 130,069.71 and 55,991.90 is: 77,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,239.71 : 130,069.71 = 55,991.90 : x
  2. Step 2: Convert to fraction form
    94,239.71/130,069.71 = 55,991.90/x
  3. Step 3: Cross multiply
    94,239.71x = 130,069.71 × 55,991.90
  4. Step 4: Simplify right side
    94,239.71x = 7,282,849,545.00
  5. Step 5: Solve for x
    x = 7,282,849,545.00/94,239.71
  6. Step 6: Final answer
    x = 77,280.05

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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.