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Finding the Fourth Proportional to 708,254.12, 977,365.86 and 385,957.64

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Solution

The fourth proportional to 708,254.12, 977,365.86 and 385,957.64 is: 532,608.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,254.12 : 977,365.86 = 385,957.64 : x
  2. Step 2: Convert to fraction form
    708,254.12/977,365.86 = 385,957.64/x
  3. Step 3: Cross multiply
    708,254.12x = 977,365.86 × 385,957.64
  4. Step 4: Simplify right side
    708,254.12x = 377,221,820,742.17
  5. Step 5: Solve for x
    x = 377,221,820,742.17/708,254.12
  6. Step 6: Final answer
    x = 532,608.01

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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.