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Finding the Fourth Proportional to 570,938.28, 856,407.42 and 238,281

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Solution

The fourth proportional to 570,938.28, 856,407.42 and 238,281 is: 357,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,938.28 : 856,407.42 = 238,281 : x
  2. Step 2: Convert to fraction form
    570,938.28/856,407.42 = 238,281/x
  3. Step 3: Cross multiply
    570,938.28x = 856,407.42 × 238,281
  4. Step 4: Simplify right side
    570,938.28x = 204,065,616,445.02
  5. Step 5: Solve for x
    x = 204,065,616,445.02/570,938.28
  6. Step 6: Final answer
    x = 357,421.50

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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.