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Finding the Fourth Proportional to 15,779,639.60, 23,669,459.40 and 15,779,639.60

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Solution

The fourth proportional to 15,779,639.60, 23,669,459.40 and 15,779,639.60 is: 23,669,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779,639.60 : 23,669,459.40 = 15,779,639.60 : x
  2. Step 2: Convert to fraction form
    15,779,639.60/23,669,459.40 = 15,779,639.60/x
  3. Step 3: Cross multiply
    15,779,639.60x = 23,669,459.40 × 15,779,639.60
  4. Step 4: Simplify right side
    15,779,639.60x = 373,495,538,858,832.19
  5. Step 5: Solve for x
    x = 373,495,538,858,832.19/15,779,639.60
  6. Step 6: Final answer
    x = 23,669,459.40

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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.