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Finding the Fourth Proportional to 144,851.90, 216,840.45 and 127,355.90

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Solution

The fourth proportional to 144,851.90, 216,840.45 and 127,355.90 is: 190,649.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,851.90 : 216,840.45 = 127,355.90 : x
  2. Step 2: Convert to fraction form
    144,851.90/216,840.45 = 127,355.90/x
  3. Step 3: Cross multiply
    144,851.90x = 216,840.45 × 127,355.90
  4. Step 4: Simplify right side
    144,851.90x = 27,615,910,666.16
  5. Step 5: Solve for x
    x = 27,615,910,666.16/144,851.90
  6. Step 6: Final answer
    x = 190,649.28

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1.5x scale

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.