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Finding the Fourth Proportional to 623,904.60, 935,856.90 and 618,655.80

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Solution

The fourth proportional to 623,904.60, 935,856.90 and 618,655.80 is: 927,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,904.60 : 935,856.90 = 618,655.80 : x
  2. Step 2: Convert to fraction form
    623,904.60/935,856.90 = 618,655.80/x
  3. Step 3: Cross multiply
    623,904.60x = 935,856.90 × 618,655.80
  4. Step 4: Simplify right side
    623,904.60x = 578,973,299,155.02
  5. Step 5: Solve for x
    x = 578,973,299,155.02/623,904.60
  6. Step 6: Final answer
    x = 927,983.70

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Half scale
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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.