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Finding the Fourth Proportional to 620,602.65, 930,904.01 and 199,878.53

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Solution

The fourth proportional to 620,602.65, 930,904.01 and 199,878.53 is: 299,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,602.65 : 930,904.01 = 199,878.53 : x
  2. Step 2: Convert to fraction form
    620,602.65/930,904.01 = 199,878.53/x
  3. Step 3: Cross multiply
    620,602.65x = 930,904.01 × 199,878.53
  4. Step 4: Simplify right side
    620,602.65x = 186,067,720,935.08
  5. Step 5: Solve for x
    x = 186,067,720,935.08/620,602.65
  6. Step 6: Final answer
    x = 299,817.80

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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.