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Finding the Fourth Proportional to 78,986,447.94, 118,484,870.43 and 20,695,553.22

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Solution

The fourth proportional to 78,986,447.94, 118,484,870.43 and 20,695,553.22 is: 31,044,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,447.94 : 118,484,870.43 = 20,695,553.22 : x
  2. Step 2: Convert to fraction form
    78,986,447.94/118,484,870.43 = 20,695,553.22/x
  3. Step 3: Cross multiply
    78,986,447.94x = 118,484,870.43 × 20,695,553.22
  4. Step 4: Simplify right side
    78,986,447.94x = 2,452,109,941,748,869.50
  5. Step 5: Solve for x
    x = 2,452,109,941,748,869.50/78,986,447.94
  6. Step 6: Final answer
    x = 31,044,691.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.