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Finding the Fourth Proportional to 127,068.40, 190,603.25 and 42,829.29

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Solution

The fourth proportional to 127,068.40, 190,603.25 and 42,829.29 is: 64,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,068.40 : 190,603.25 = 42,829.29 : x
  2. Step 2: Convert to fraction form
    127,068.40/190,603.25 = 42,829.29/x
  3. Step 3: Cross multiply
    127,068.40x = 190,603.25 × 42,829.29
  4. Step 4: Simplify right side
    127,068.40x = 8,163,401,869.19
  5. Step 5: Solve for x
    x = 8,163,401,869.19/127,068.40
  6. Step 6: Final answer
    x = 64,244.15

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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.