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Finding the Fourth Proportional to 77,779,969.60, 116,669,954.40 and 77,779,969.60

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Solution

The fourth proportional to 77,779,969.60, 116,669,954.40 and 77,779,969.60 is: 116,669,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779,969.60 : 116,669,954.40 = 77,779,969.60 : x
  2. Step 2: Convert to fraction form
    77,779,969.60/116,669,954.40 = 77,779,969.60/x
  3. Step 3: Cross multiply
    77,779,969.60x = 116,669,954.40 × 77,779,969.60
  4. Step 4: Simplify right side
    77,779,969.60x = 9,074,585,506,465,386
  5. Step 5: Solve for x
    x = 9,074,585,506,465,386/77,779,969.60
  6. Step 6: Final answer
    x = 116,669,954.40

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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.