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Finding the Fourth Proportional to 569,795.19, 786,337.92 and 315,148.20

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Solution

The fourth proportional to 569,795.19, 786,337.92 and 315,148.20 is: 434,915.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,795.19 : 786,337.92 = 315,148.20 : x
  2. Step 2: Convert to fraction form
    569,795.19/786,337.92 = 315,148.20/x
  3. Step 3: Cross multiply
    569,795.19x = 786,337.92 × 315,148.20
  4. Step 4: Simplify right side
    569,795.19x = 247,812,980,079.74
  5. Step 5: Solve for x
    x = 247,812,980,079.74/569,795.19
  6. Step 6: Final answer
    x = 434,915.89

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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.