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Finding the Fourth Proportional to 570,953.61, 787,944.11 and 316,305.81

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Solution

The fourth proportional to 570,953.61, 787,944.11 and 316,305.81 is: 436,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,953.61 : 787,944.11 = 316,305.81 : x
  2. Step 2: Convert to fraction form
    570,953.61/787,944.11 = 316,305.81/x
  3. Step 3: Cross multiply
    570,953.61x = 787,944.11 × 316,305.81
  4. Step 4: Simplify right side
    570,953.61x = 249,231,298,366.75
  5. Step 5: Solve for x
    x = 249,231,298,366.75/570,953.61
  6. Step 6: Final answer
    x = 436,517.60

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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.