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Finding the Fourth Proportional to 640,783.08, 884,299.32 and 350,411.76

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Solution

The fourth proportional to 640,783.08, 884,299.32 and 350,411.76 is: 483,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,783.08 : 884,299.32 = 350,411.76 : x
  2. Step 2: Convert to fraction form
    640,783.08/884,299.32 = 350,411.76/x
  3. Step 3: Cross multiply
    640,783.08x = 884,299.32 × 350,411.76
  4. Step 4: Simplify right side
    640,783.08x = 309,868,881,088.00
  5. Step 5: Solve for x
    x = 309,868,881,088.00/640,783.08
  6. Step 6: Final answer
    x = 483,578.44

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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.