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Finding the Fourth Proportional to 607,647.56, 911,391.42 and 186,888.20

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Solution

The fourth proportional to 607,647.56, 911,391.42 and 186,888.20 is: 280,307.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,647.56 : 911,391.42 = 186,888.20 : x
  2. Step 2: Convert to fraction form
    607,647.56/911,391.42 = 186,888.20/x
  3. Step 3: Cross multiply
    607,647.56x = 911,391.42 × 186,888.20
  4. Step 4: Simplify right side
    607,647.56x = 170,328,301,979.24
  5. Step 5: Solve for x
    x = 170,328,301,979.24/607,647.56
  6. Step 6: Final answer
    x = 280,307.72

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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.