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Finding the Fourth Proportional to 607,803.60, 838,822.20 and 403,493.52

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Solution

The fourth proportional to 607,803.60, 838,822.20 and 403,493.52 is: 556,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,803.60 : 838,822.20 = 403,493.52 : x
  2. Step 2: Convert to fraction form
    607,803.60/838,822.20 = 403,493.52/x
  3. Step 3: Cross multiply
    607,803.60x = 838,822.20 × 403,493.52
  4. Step 4: Simplify right side
    607,803.60x = 338,459,322,132.14
  5. Step 5: Solve for x
    x = 338,459,322,132.14/607,803.60
  6. Step 6: Final answer
    x = 556,856.40

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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.