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Finding the Fourth Proportional to 623,055.65, 936,534.32 and 411,185.09

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Solution

The fourth proportional to 623,055.65, 936,534.32 and 411,185.09 is: 618,065.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,055.65 : 936,534.32 = 411,185.09 : x
  2. Step 2: Convert to fraction form
    623,055.65/936,534.32 = 411,185.09/x
  3. Step 3: Cross multiply
    623,055.65x = 936,534.32 × 411,185.09
  4. Step 4: Simplify right side
    623,055.65x = 385,088,941,918.69
  5. Step 5: Solve for x
    x = 385,088,941,918.69/623,055.65
  6. Step 6: Final answer
    x = 618,065.09

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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.