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Finding the Fourth Proportional to 144,864.40, 216,859.20 and 127,368.40

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Solution

The fourth proportional to 144,864.40, 216,859.20 and 127,368.40 is: 190,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,864.40 : 216,859.20 = 127,368.40 : x
  2. Step 2: Convert to fraction form
    144,864.40/216,859.20 = 127,368.40/x
  3. Step 3: Cross multiply
    144,864.40x = 216,859.20 × 127,368.40
  4. Step 4: Simplify right side
    144,864.40x = 27,621,009,329.28
  5. Step 5: Solve for x
    x = 27,621,009,329.28/144,864.40
  6. Step 6: Final answer
    x = 190,668.03

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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.