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Finding the Fourth Proportional to 782,197.72, 1,079,433 and 424,501.72

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Solution

The fourth proportional to 782,197.72, 1,079,433 and 424,501.72 is: 585,812.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,197.72 : 1,079,433 = 424,501.72 : x
  2. Step 2: Convert to fraction form
    782,197.72/1,079,433 = 424,501.72/x
  3. Step 3: Cross multiply
    782,197.72x = 1,079,433 × 424,501.72
  4. Step 4: Simplify right side
    782,197.72x = 458,221,165,124.76
  5. Step 5: Solve for x
    x = 458,221,165,124.76/782,197.72
  6. Step 6: Final answer
    x = 585,812.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.