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Finding the Fourth Proportional to 7,186,645.60, 10,779,968.40 and 4,635,728.80

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Solution

The fourth proportional to 7,186,645.60, 10,779,968.40 and 4,635,728.80 is: 6,953,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186,645.60 : 10,779,968.40 = 4,635,728.80 : x
  2. Step 2: Convert to fraction form
    7,186,645.60/10,779,968.40 = 4,635,728.80/x
  3. Step 3: Cross multiply
    7,186,645.60x = 10,779,968.40 × 4,635,728.80
  4. Step 4: Simplify right side
    7,186,645.60x = 49,973,009,974,969.92
  5. Step 5: Solve for x
    x = 49,973,009,974,969.92/7,186,645.60
  6. Step 6: Final answer
    x = 6,953,593.20

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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.