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Finding the Fourth Proportional to 64,806,916.80, 97,098,400.80 and 54,729,220.80

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Solution

The fourth proportional to 64,806,916.80, 97,098,400.80 and 54,729,220.80 is: 81,999,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,806,916.80 : 97,098,400.80 = 54,729,220.80 : x
  2. Step 2: Convert to fraction form
    64,806,916.80/97,098,400.80 = 54,729,220.80/x
  3. Step 3: Cross multiply
    64,806,916.80x = 97,098,400.80 × 54,729,220.80
  4. Step 4: Simplify right side
    64,806,916.80x = 5,314,119,816,710,096
  5. Step 5: Solve for x
    x = 5,314,119,816,710,096/64,806,916.80
  6. Step 6: Final answer
    x = 81,999,269.20

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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.