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Finding the Fourth Proportional to 615,087.10, 922,630.65 and 349,666.30

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Solution

The fourth proportional to 615,087.10, 922,630.65 and 349,666.30 is: 524,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,087.10 : 922,630.65 = 349,666.30 : x
  2. Step 2: Convert to fraction form
    615,087.10/922,630.65 = 349,666.30/x
  3. Step 3: Cross multiply
    615,087.10x = 922,630.65 × 349,666.30
  4. Step 4: Simplify right side
    615,087.10x = 322,612,845,652.10
  5. Step 5: Solve for x
    x = 322,612,845,652.10/615,087.10
  6. Step 6: Final answer
    x = 524,499.45

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Double scale
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Similar ratio
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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.