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Finding the Fourth Proportional to 18,937,898.01, 28,411,056.90 and 8,835,007.77

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Solution

The fourth proportional to 18,937,898.01, 28,411,056.90 and 8,835,007.77 is: 13,254,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937,898.01 : 28,411,056.90 = 8,835,007.77 : x
  2. Step 2: Convert to fraction form
    18,937,898.01/28,411,056.90 = 8,835,007.77/x
  3. Step 3: Cross multiply
    18,937,898.01x = 28,411,056.90 × 8,835,007.77
  4. Step 4: Simplify right side
    18,937,898.01x = 251,011,908,465,412.09
  5. Step 5: Solve for x
    x = 251,011,908,465,412.09/18,937,898.01
  6. Step 6: Final answer
    x = 13,254,475.67

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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.