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Finding the Fourth Proportional to 11,852,642.90, 17,778,964.36 and 8,866,658.90

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Solution

The fourth proportional to 11,852,642.90, 17,778,964.36 and 8,866,658.90 is: 13,299,988.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,852,642.90 : 17,778,964.36 = 8,866,658.90 : x
  2. Step 2: Convert to fraction form
    11,852,642.90/17,778,964.36 = 8,866,658.90/x
  3. Step 3: Cross multiply
    11,852,642.90x = 17,778,964.36 × 8,866,658.90
  4. Step 4: Simplify right side
    11,852,642.90x = 157,640,012,575,376.81
  5. Step 5: Solve for x
    x = 157,640,012,575,376.81/11,852,642.90
  6. Step 6: Final answer
    x = 13,299,988.36

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Double scale
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Similar ratio
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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.