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Finding the Fourth Proportional to 556,421.55, 767,862.63 and 301,772.94

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Solution

The fourth proportional to 556,421.55, 767,862.63 and 301,772.94 is: 416,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,421.55 : 767,862.63 = 301,772.94 : x
  2. Step 2: Convert to fraction form
    556,421.55/767,862.63 = 301,772.94/x
  3. Step 3: Cross multiply
    556,421.55x = 767,862.63 × 301,772.94
  4. Step 4: Simplify right side
    556,421.55x = 231,720,163,371.23
  5. Step 5: Solve for x
    x = 231,720,163,371.23/556,421.55
  6. Step 6: Final answer
    x = 416,447.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.