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Finding the Fourth Proportional to 393,461.40, 590,192.10 and 156,973.80

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Solution

The fourth proportional to 393,461.40, 590,192.10 and 156,973.80 is: 235,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,461.40 : 590,192.10 = 156,973.80 : x
  2. Step 2: Convert to fraction form
    393,461.40/590,192.10 = 156,973.80/x
  3. Step 3: Cross multiply
    393,461.40x = 590,192.10 × 156,973.80
  4. Step 4: Simplify right side
    393,461.40x = 92,644,696,666.98
  5. Step 5: Solve for x
    x = 92,644,696,666.98/393,461.40
  6. Step 6: Final answer
    x = 235,460.70

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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.