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Finding the Fourth Proportional to 262,646.60, 393,969.90 and 157,411.40

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Solution

The fourth proportional to 262,646.60, 393,969.90 and 157,411.40 is: 236,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,646.60 : 393,969.90 = 157,411.40 : x
  2. Step 2: Convert to fraction form
    262,646.60/393,969.90 = 157,411.40/x
  3. Step 3: Cross multiply
    262,646.60x = 393,969.90 × 157,411.40
  4. Step 4: Simplify right side
    262,646.60x = 62,015,353,516.86
  5. Step 5: Solve for x
    x = 62,015,353,516.86/262,646.60
  6. Step 6: Final answer
    x = 236,117.10

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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.