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Finding the Fourth Proportional to 670,530.60, 924,953.51 and 398,686.17

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Solution

The fourth proportional to 670,530.60, 924,953.51 and 398,686.17 is: 549,961.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,530.60 : 924,953.51 = 398,686.17 : x
  2. Step 2: Convert to fraction form
    670,530.60/924,953.51 = 398,686.17/x
  3. Step 3: Cross multiply
    670,530.60x = 924,953.51 × 398,686.17
  4. Step 4: Simplify right side
    670,530.60x = 368,766,170,336.53
  5. Step 5: Solve for x
    x = 368,766,170,336.53/670,530.60
  6. Step 6: Final answer
    x = 549,961.73

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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.