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Finding the Fourth Proportional to 8,806,869.60, 13,210,304.40 and 7,389,693.60

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Solution

The fourth proportional to 8,806,869.60, 13,210,304.40 and 7,389,693.60 is: 11,084,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806,869.60 : 13,210,304.40 = 7,389,693.60 : x
  2. Step 2: Convert to fraction form
    8,806,869.60/13,210,304.40 = 7,389,693.60/x
  3. Step 3: Cross multiply
    8,806,869.60x = 13,210,304.40 × 7,389,693.60
  4. Step 4: Simplify right side
    8,806,869.60x = 97,620,101,878,731.84
  5. Step 5: Solve for x
    x = 97,620,101,878,731.84/8,806,869.60
  6. Step 6: Final answer
    x = 11,084,540.40

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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.