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Finding the Fourth Proportional to 640,924.20, 960,119.10 and 562,127.40

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Solution

The fourth proportional to 640,924.20, 960,119.10 and 562,127.40 is: 842,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,924.20 : 960,119.10 = 562,127.40 : x
  2. Step 2: Convert to fraction form
    640,924.20/960,119.10 = 562,127.40/x
  3. Step 3: Cross multiply
    640,924.20x = 960,119.10 × 562,127.40
  4. Step 4: Simplify right side
    640,924.20x = 539,709,253,373.34
  5. Step 5: Solve for x
    x = 539,709,253,373.34/640,924.20
  6. Step 6: Final answer
    x = 842,079.69

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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.