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Finding the Fourth Proportional to 91,583,674.40, 128,557,266.40 and 91,583,674.40

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Solution

The fourth proportional to 91,583,674.40, 128,557,266.40 and 91,583,674.40 is: 128,557,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,583,674.40 : 128,557,266.40 = 91,583,674.40 : x
  2. Step 2: Convert to fraction form
    91,583,674.40/128,557,266.40 = 91,583,674.40/x
  3. Step 3: Cross multiply
    91,583,674.40x = 128,557,266.40 × 91,583,674.40
  4. Step 4: Simplify right side
    91,583,674.40x = 11,773,746,827,731,662
  5. Step 5: Solve for x
    x = 11,773,746,827,731,662/91,583,674.40
  6. Step 6: Final answer
    x = 128,557,266.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.