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Finding the Fourth Proportional to 615,710.60, 921,816.30 and 545,726.60

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Solution

The fourth proportional to 615,710.60, 921,816.30 and 545,726.60 is: 817,039.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,710.60 : 921,816.30 = 545,726.60 : x
  2. Step 2: Convert to fraction form
    615,710.60/921,816.30 = 545,726.60/x
  3. Step 3: Cross multiply
    615,710.60x = 921,816.30 × 545,726.60
  4. Step 4: Simplify right side
    615,710.60x = 503,059,675,223.58
  5. Step 5: Solve for x
    x = 503,059,675,223.58/615,710.60
  6. Step 6: Final answer
    x = 817,039.17

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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.