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Finding the Fourth Proportional to 266,365.10, 399,544.91 and 153,973.81

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Solution

The fourth proportional to 266,365.10, 399,544.91 and 153,973.81 is: 230,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,365.10 : 399,544.91 = 153,973.81 : x
  2. Step 2: Convert to fraction form
    266,365.10/399,544.91 = 153,973.81/x
  3. Step 3: Cross multiply
    266,365.10x = 399,544.91 × 153,973.81
  4. Step 4: Simplify right side
    266,365.10x = 61,519,452,058.81
  5. Step 5: Solve for x
    x = 61,519,452,058.81/266,365.10
  6. Step 6: Final answer
    x = 230,959.13

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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.