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Finding the Fourth Proportional to 615,720.60, 921,831.30 and 545,736.60

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Solution

The fourth proportional to 615,720.60, 921,831.30 and 545,736.60 is: 817,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,720.60 : 921,831.30 = 545,736.60 : x
  2. Step 2: Convert to fraction form
    615,720.60/921,831.30 = 545,736.60/x
  3. Step 3: Cross multiply
    615,720.60x = 921,831.30 × 545,736.60
  4. Step 4: Simplify right side
    615,720.60x = 503,077,079,435.58
  5. Step 5: Solve for x
    x = 503,077,079,435.58/615,720.60
  6. Step 6: Final answer
    x = 817,054.16

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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.