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Finding the Fourth Proportional to 570,853.62, 787,779 and 316,199.34

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Solution

The fourth proportional to 570,853.62, 787,779 and 316,199.34 is: 436,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,853.62 : 787,779 = 316,199.34 : x
  2. Step 2: Convert to fraction form
    570,853.62/787,779 = 316,199.34/x
  3. Step 3: Cross multiply
    570,853.62x = 787,779 × 316,199.34
  4. Step 4: Simplify right side
    570,853.62x = 249,095,199,865.86
  5. Step 5: Solve for x
    x = 249,095,199,865.86/570,853.62
  6. Step 6: Final answer
    x = 436,355.65

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1.5x scale

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.