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Finding the Fourth Proportional to 281,456.93, 388,407.65 and 152,393.19

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Solution

The fourth proportional to 281,456.93, 388,407.65 and 152,393.19 is: 210,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,456.93 : 388,407.65 = 152,393.19 : x
  2. Step 2: Convert to fraction form
    281,456.93/388,407.65 = 152,393.19/x
  3. Step 3: Cross multiply
    281,456.93x = 388,407.65 × 152,393.19
  4. Step 4: Simplify right side
    281,456.93x = 59,190,680,803.90
  5. Step 5: Solve for x
    x = 59,190,680,803.90/281,456.93
  6. Step 6: Final answer
    x = 210,301.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.