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Finding the Fourth Proportional to 642,098.98, 963,148.47 and 168,783.58

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Solution

The fourth proportional to 642,098.98, 963,148.47 and 168,783.58 is: 253,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,098.98 : 963,148.47 = 168,783.58 : x
  2. Step 2: Convert to fraction form
    642,098.98/963,148.47 = 168,783.58/x
  3. Step 3: Cross multiply
    642,098.98x = 963,148.47 × 168,783.58
  4. Step 4: Simplify right side
    642,098.98x = 162,563,646,838.12
  5. Step 5: Solve for x
    x = 162,563,646,838.12/642,098.98
  6. Step 6: Final answer
    x = 253,175.37

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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.