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Finding the Fourth Proportional to 10,369,978.35, 15,554,967.53 and 9,950,074.35

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Solution

The fourth proportional to 10,369,978.35, 15,554,967.53 and 9,950,074.35 is: 14,925,111.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,978.35 : 15,554,967.53 = 9,950,074.35 : x
  2. Step 2: Convert to fraction form
    10,369,978.35/15,554,967.53 = 9,950,074.35/x
  3. Step 3: Cross multiply
    10,369,978.35x = 15,554,967.53 × 9,950,074.35
  4. Step 4: Simplify right side
    10,369,978.35x = 154,773,083,435,335.84
  5. Step 5: Solve for x
    x = 154,773,083,435,335.84/10,369,978.35
  6. Step 6: Final answer
    x = 14,925,111.53

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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.