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Finding the Fourth Proportional to 356,123.40, 534,530.70 and 178,830.60

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Solution

The fourth proportional to 356,123.40, 534,530.70 and 178,830.60 is: 268,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,123.40 : 534,530.70 = 178,830.60 : x
  2. Step 2: Convert to fraction form
    356,123.40/534,530.70 = 178,830.60/x
  3. Step 3: Cross multiply
    356,123.40x = 534,530.70 × 178,830.60
  4. Step 4: Simplify right side
    356,123.40x = 95,590,445,799.42
  5. Step 5: Solve for x
    x = 95,590,445,799.42/356,123.40
  6. Step 6: Final answer
    x = 268,419.45

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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.