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Finding the Fourth Proportional to 666,954.61, 920,928.08 and 615,948.71

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Solution

The fourth proportional to 666,954.61, 920,928.08 and 615,948.71 is: 850,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,954.61 : 920,928.08 = 615,948.71 : x
  2. Step 2: Convert to fraction form
    666,954.61/920,928.08 = 615,948.71/x
  3. Step 3: Cross multiply
    666,954.61x = 920,928.08 × 615,948.71
  4. Step 4: Simplify right side
    666,954.61x = 567,244,459,814.01
  5. Step 5: Solve for x
    x = 567,244,459,814.01/666,954.61
  6. Step 6: Final answer
    x = 850,499.35

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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.