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Finding the Fourth Proportional to 640,865.27, 961,875.70 and 341,595.11

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Solution

The fourth proportional to 640,865.27, 961,875.70 and 341,595.11 is: 512,700.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,865.27 : 961,875.70 = 341,595.11 : x
  2. Step 2: Convert to fraction form
    640,865.27/961,875.70 = 341,595.11/x
  3. Step 3: Cross multiply
    640,865.27x = 961,875.70 × 341,595.11
  4. Step 4: Simplify right side
    640,865.27x = 328,572,035,547.83
  5. Step 5: Solve for x
    x = 328,572,035,547.83/640,865.27
  6. Step 6: Final answer
    x = 512,700.64

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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.