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Finding the Fourth Proportional to 621,242.88, 857,108.98 and 506,323.92

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Solution

The fourth proportional to 621,242.88, 857,108.98 and 506,323.92 is: 698,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,242.88 : 857,108.98 = 506,323.92 : x
  2. Step 2: Convert to fraction form
    621,242.88/857,108.98 = 506,323.92/x
  3. Step 3: Cross multiply
    621,242.88x = 857,108.98 × 506,323.92
  4. Step 4: Simplify right side
    621,242.88x = 433,974,778,620.80
  5. Step 5: Solve for x
    x = 433,974,778,620.80/621,242.88
  6. Step 6: Final answer
    x = 698,558.96

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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.