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Finding the Fourth Proportional to 292,896,609.60, 439,344,914.40 and 260,018,126.40

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Solution

The fourth proportional to 292,896,609.60, 439,344,914.40 and 260,018,126.40 is: 390,027,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,896,609.60 : 439,344,914.40 = 260,018,126.40 : x
  2. Step 2: Convert to fraction form
    292,896,609.60/439,344,914.40 = 260,018,126.40/x
  3. Step 3: Cross multiply
    292,896,609.60x = 439,344,914.40 × 260,018,126.40
  4. Step 4: Simplify right side
    292,896,609.60x = 114,237,641,485,656,384
  5. Step 5: Solve for x
    x = 114,237,641,485,656,384/292,896,609.60
  6. Step 6: Final answer
    x = 390,027,189.60

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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.