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Finding the Fourth Proportional to 717,818.02, 990,633 and 395,528.04

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Solution

The fourth proportional to 717,818.02, 990,633 and 395,528.04 is: 545,853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,818.02 : 990,633 = 395,528.04 : x
  2. Step 2: Convert to fraction form
    717,818.02/990,633 = 395,528.04/x
  3. Step 3: Cross multiply
    717,818.02x = 990,633 × 395,528.04
  4. Step 4: Simplify right side
    717,818.02x = 391,823,128,849.32
  5. Step 5: Solve for x
    x = 391,823,128,849.32/717,818.02
  6. Step 6: Final answer
    x = 545,853.01

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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.