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Finding the Fourth Proportional to 717,894.50, 990,701.07 and 395,616.15

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Solution

The fourth proportional to 717,894.50, 990,701.07 and 395,616.15 is: 545,953.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,894.50 : 990,701.07 = 395,616.15 : x
  2. Step 2: Convert to fraction form
    717,894.50/990,701.07 = 395,616.15/x
  3. Step 3: Cross multiply
    717,894.50x = 990,701.07 × 395,616.15
  4. Step 4: Simplify right side
    717,894.50x = 391,937,343,114.28
  5. Step 5: Solve for x
    x = 391,937,343,114.28/717,894.50
  6. Step 6: Final answer
    x = 545,953.96

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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.