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Finding the Fourth Proportional to 611,117.60, 916,676.40 and 576,125.60

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Solution

The fourth proportional to 611,117.60, 916,676.40 and 576,125.60 is: 864,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,117.60 : 916,676.40 = 576,125.60 : x
  2. Step 2: Convert to fraction form
    611,117.60/916,676.40 = 576,125.60/x
  3. Step 3: Cross multiply
    611,117.60x = 916,676.40 × 576,125.60
  4. Step 4: Simplify right side
    611,117.60x = 528,120,740,955.84
  5. Step 5: Solve for x
    x = 528,120,740,955.84/611,117.60
  6. Step 6: Final answer
    x = 864,188.40

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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.