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Finding the Fourth Proportional to 645,871,304.40, 968,806,956.60 and 645,871,304.40

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Solution

The fourth proportional to 645,871,304.40, 968,806,956.60 and 645,871,304.40 is: 968,806,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,871,304.40 : 968,806,956.60 = 645,871,304.40 : x
  2. Step 2: Convert to fraction form
    645,871,304.40/968,806,956.60 = 645,871,304.40/x
  3. Step 3: Cross multiply
    645,871,304.40x = 968,806,956.60 × 645,871,304.40
  4. Step 4: Simplify right side
    645,871,304.40x = 625,724,612,771,036,160
  5. Step 5: Solve for x
    x = 625,724,612,771,036,160/645,871,304.40
  6. Step 6: Final answer
    x = 968,806,956.60

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Double scale
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Similar ratio
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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.