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Finding the Fourth Proportional to 364,070.40, 545,959.80 and 127,291.20

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Solution

The fourth proportional to 364,070.40, 545,959.80 and 127,291.20 is: 190,885.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,070.40 : 545,959.80 = 127,291.20 : x
  2. Step 2: Convert to fraction form
    364,070.40/545,959.80 = 127,291.20/x
  3. Step 3: Cross multiply
    364,070.40x = 545,959.80 × 127,291.20
  4. Step 4: Simplify right side
    364,070.40x = 69,495,878,093.76
  5. Step 5: Solve for x
    x = 69,495,878,093.76/364,070.40
  6. Step 6: Final answer
    x = 190,885.82

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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.