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Finding the Fourth Proportional to 70,773,801.60, 106,111,347.66 and 31,360,619.01

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Solution

The fourth proportional to 70,773,801.60, 106,111,347.66 and 31,360,619.01 is: 47,019,058.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,773,801.60 : 106,111,347.66 = 31,360,619.01 : x
  2. Step 2: Convert to fraction form
    70,773,801.60/106,111,347.66 = 31,360,619.01/x
  3. Step 3: Cross multiply
    70,773,801.60x = 106,111,347.66 × 31,360,619.01
  4. Step 4: Simplify right side
    70,773,801.60x = 3,327,717,546,602,915
  5. Step 5: Solve for x
    x = 3,327,717,546,602,915/70,773,801.60
  6. Step 6: Final answer
    x = 47,019,058.91

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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.