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Finding the Fourth Proportional to 570,788.30, 787,644.51 and 316,134.02

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Solution

The fourth proportional to 570,788.30, 787,644.51 and 316,134.02 is: 436,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,788.30 : 787,644.51 = 316,134.02 : x
  2. Step 2: Convert to fraction form
    570,788.30/787,644.51 = 316,134.02/x
  3. Step 3: Cross multiply
    570,788.30x = 787,644.51 × 316,134.02
  4. Step 4: Simplify right side
    570,788.30x = 249,001,226,060.84
  5. Step 5: Solve for x
    x = 249,001,226,060.84/570,788.30
  6. Step 6: Final answer
    x = 436,240.94

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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.