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Finding the Fourth Proportional to 403,909.02, 604,689.84 and 234,913.86

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Solution

The fourth proportional to 403,909.02, 604,689.84 and 234,913.86 is: 351,688.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,909.02 : 604,689.84 = 234,913.86 : x
  2. Step 2: Convert to fraction form
    403,909.02/604,689.84 = 234,913.86/x
  3. Step 3: Cross multiply
    403,909.02x = 604,689.84 × 234,913.86
  4. Step 4: Simplify right side
    403,909.02x = 142,050,024,417.18
  5. Step 5: Solve for x
    x = 142,050,024,417.18/403,909.02
  6. Step 6: Final answer
    x = 351,688.17

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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.