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Finding the Fourth Proportional to 611,772.60, 917,658.90 and 572,406.60

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Solution

The fourth proportional to 611,772.60, 917,658.90 and 572,406.60 is: 858,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,772.60 : 917,658.90 = 572,406.60 : x
  2. Step 2: Convert to fraction form
    611,772.60/917,658.90 = 572,406.60/x
  3. Step 3: Cross multiply
    611,772.60x = 917,658.90 × 572,406.60
  4. Step 4: Simplify right side
    611,772.60x = 525,274,010,908.74
  5. Step 5: Solve for x
    x = 525,274,010,908.74/611,772.60
  6. Step 6: Final answer
    x = 858,609.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.