Home / 66,585,816.50-99,878,724.99-18,716,760.50

Finding the Fourth Proportional to 66,585,816.50, 99,878,724.99 and 18,716,760.50

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Solution

The fourth proportional to 66,585,816.50, 99,878,724.99 and 18,716,760.50 is: 28,075,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585,816.50 : 99,878,724.99 = 18,716,760.50 : x
  2. Step 2: Convert to fraction form
    66,585,816.50/99,878,724.99 = 18,716,760.50/x
  3. Step 3: Cross multiply
    66,585,816.50x = 99,878,724.99 × 18,716,760.50
  4. Step 4: Simplify right side
    66,585,816.50x = 1,869,406,174,683,194.75
  5. Step 5: Solve for x
    x = 1,869,406,174,683,194.75/66,585,816.50
  6. Step 6: Final answer
    x = 28,075,140.82

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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.