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Finding the Fourth Proportional to 623,856.60, 935,784.90 and 545,124.60

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Solution

The fourth proportional to 623,856.60, 935,784.90 and 545,124.60 is: 817,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,856.60 : 935,784.90 = 545,124.60 : x
  2. Step 2: Convert to fraction form
    623,856.60/935,784.90 = 545,124.60/x
  3. Step 3: Cross multiply
    623,856.60x = 935,784.90 × 545,124.60
  4. Step 4: Simplify right side
    623,856.60x = 510,119,369,298.54
  5. Step 5: Solve for x
    x = 510,119,369,298.54/623,856.60
  6. Step 6: Final answer
    x = 817,686.90

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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.