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Finding the Fourth Proportional to 8,931,871.70, 13,397,807.55 and 4,673,345.30

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Solution

The fourth proportional to 8,931,871.70, 13,397,807.55 and 4,673,345.30 is: 7,010,017.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931,871.70 : 13,397,807.55 = 4,673,345.30 : x
  2. Step 2: Convert to fraction form
    8,931,871.70/13,397,807.55 = 4,673,345.30/x
  3. Step 3: Cross multiply
    8,931,871.70x = 13,397,807.55 × 4,673,345.30
  4. Step 4: Simplify right side
    8,931,871.70x = 62,612,580,944,097.02
  5. Step 5: Solve for x
    x = 62,612,580,944,097.02/8,931,871.70
  6. Step 6: Final answer
    x = 7,010,017.95

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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.