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Finding the Fourth Proportional to 356,541.60, 534,812.40 and 146,330.40

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Solution

The fourth proportional to 356,541.60, 534,812.40 and 146,330.40 is: 219,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,541.60 : 534,812.40 = 146,330.40 : x
  2. Step 2: Convert to fraction form
    356,541.60/534,812.40 = 146,330.40/x
  3. Step 3: Cross multiply
    356,541.60x = 534,812.40 × 146,330.40
  4. Step 4: Simplify right side
    356,541.60x = 78,259,312,416.96
  5. Step 5: Solve for x
    x = 78,259,312,416.96/356,541.60
  6. Step 6: Final answer
    x = 219,495.60

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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.