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Finding the Fourth Proportional to 286,707.56, 395,656.70 and 157,648.19

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Solution

The fourth proportional to 286,707.56, 395,656.70 and 157,648.19 is: 217,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,707.56 : 395,656.70 = 157,648.19 : x
  2. Step 2: Convert to fraction form
    286,707.56/395,656.70 = 157,648.19/x
  3. Step 3: Cross multiply
    286,707.56x = 395,656.70 × 157,648.19
  4. Step 4: Simplify right side
    286,707.56x = 62,374,559,849.85
  5. Step 5: Solve for x
    x = 62,374,559,849.85/286,707.56
  6. Step 6: Final answer
    x = 217,554.64

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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.