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Finding the Fourth Proportional to 531,438.80, 796,884.60 and 157,413.20

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Solution

The fourth proportional to 531,438.80, 796,884.60 and 157,413.20 is: 236,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,438.80 : 796,884.60 = 157,413.20 : x
  2. Step 2: Convert to fraction form
    531,438.80/796,884.60 = 157,413.20/x
  3. Step 3: Cross multiply
    531,438.80x = 796,884.60 × 157,413.20
  4. Step 4: Simplify right side
    531,438.80x = 125,440,154,916.72
  5. Step 5: Solve for x
    x = 125,440,154,916.72/531,438.80
  6. Step 6: Final answer
    x = 236,038.76

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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.