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Finding the Fourth Proportional to 292,416.60, 438,624.90 and 187,440.60

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Solution

The fourth proportional to 292,416.60, 438,624.90 and 187,440.60 is: 281,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,416.60 : 438,624.90 = 187,440.60 : x
  2. Step 2: Convert to fraction form
    292,416.60/438,624.90 = 187,440.60/x
  3. Step 3: Cross multiply
    292,416.60x = 438,624.90 × 187,440.60
  4. Step 4: Simplify right side
    292,416.60x = 82,216,114,430.94
  5. Step 5: Solve for x
    x = 82,216,114,430.94/292,416.60
  6. Step 6: Final answer
    x = 281,160.90

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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.