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Finding the Fourth Proportional to 286,705.17, 395,663.28 and 157,653.46

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Solution

The fourth proportional to 286,705.17, 395,663.28 and 157,653.46 is: 217,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,705.17 : 395,663.28 = 157,653.46 : x
  2. Step 2: Convert to fraction form
    286,705.17/395,663.28 = 157,653.46/x
  3. Step 3: Cross multiply
    286,705.17x = 395,663.28 × 157,653.46
  4. Step 4: Simplify right side
    286,705.17x = 62,377,685,086.95
  5. Step 5: Solve for x
    x = 62,377,685,086.95/286,705.17
  6. Step 6: Final answer
    x = 217,567.35

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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.