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Finding the Fourth Proportional to 642,070.40, 963,105.60 and 168,803.60

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Solution

The fourth proportional to 642,070.40, 963,105.60 and 168,803.60 is: 253,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,070.40 : 963,105.60 = 168,803.60 : x
  2. Step 2: Convert to fraction form
    642,070.40/963,105.60 = 168,803.60/x
  3. Step 3: Cross multiply
    642,070.40x = 963,105.60 × 168,803.60
  4. Step 4: Simplify right side
    642,070.40x = 162,575,692,460.16
  5. Step 5: Solve for x
    x = 162,575,692,460.16/642,070.40
  6. Step 6: Final answer
    x = 253,205.40

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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.