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Finding the Fourth Proportional to 156,931.45, 235,397.18 and 156,931.45

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Solution

The fourth proportional to 156,931.45, 235,397.18 and 156,931.45 is: 235,397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.45 : 235,397.18 = 156,931.45 : x
  2. Step 2: Convert to fraction form
    156,931.45/235,397.18 = 156,931.45/x
  3. Step 3: Cross multiply
    156,931.45x = 235,397.18 × 156,931.45
  4. Step 4: Simplify right side
    156,931.45x = 36,941,220,783.31
  5. Step 5: Solve for x
    x = 36,941,220,783.31/156,931.45
  6. Step 6: Final answer
    x = 235,397.18

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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.