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Finding the Fourth Proportional to 108,900,289.80, 152,573,779.80 and 108,900,289.80

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Solution

The fourth proportional to 108,900,289.80, 152,573,779.80 and 108,900,289.80 is: 152,573,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,900,289.80 : 152,573,779.80 = 108,900,289.80 : x
  2. Step 2: Convert to fraction form
    108,900,289.80/152,573,779.80 = 108,900,289.80/x
  3. Step 3: Cross multiply
    108,900,289.80x = 152,573,779.80 × 108,900,289.80
  4. Step 4: Simplify right side
    108,900,289.80x = 16,615,328,836,101,386
  5. Step 5: Solve for x
    x = 16,615,328,836,101,386/108,900,289.80
  6. Step 6: Final answer
    x = 152,573,779.80

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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.