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Finding the Fourth Proportional to 72,602,799.20, 101,719,501.60 and 72,602,799.20

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Solution

The fourth proportional to 72,602,799.20, 101,719,501.60 and 72,602,799.20 is: 101,719,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602,799.20 : 101,719,501.60 = 72,602,799.20 : x
  2. Step 2: Convert to fraction form
    72,602,799.20/101,719,501.60 = 72,602,799.20/x
  3. Step 3: Cross multiply
    72,602,799.20x = 101,719,501.60 × 72,602,799.20
  4. Step 4: Simplify right side
    72,602,799.20x = 7,385,120,549,388,879
  5. Step 5: Solve for x
    x = 7,385,120,549,388,879/72,602,799.20
  6. Step 6: Final answer
    x = 101,719,501.60

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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.