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Finding the Fourth Proportional to 651,353.10, 898,608.65 and 406,193.64

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Solution

The fourth proportional to 651,353.10, 898,608.65 and 406,193.64 is: 560,385.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,353.10 : 898,608.65 = 406,193.64 : x
  2. Step 2: Convert to fraction form
    651,353.10/898,608.65 = 406,193.64/x
  3. Step 3: Cross multiply
    651,353.10x = 898,608.65 × 406,193.64
  4. Step 4: Simplify right side
    651,353.10x = 365,009,118,478.99
  5. Step 5: Solve for x
    x = 365,009,118,478.99/651,353.10
  6. Step 6: Final answer
    x = 560,385.94

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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.