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Finding the Fourth Proportional to 98,987.99, 148,411.47 and 46,368.77

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Solution

The fourth proportional to 98,987.99, 148,411.47 and 46,368.77 is: 69,520.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,987.99 : 148,411.47 = 46,368.77 : x
  2. Step 2: Convert to fraction form
    98,987.99/148,411.47 = 46,368.77/x
  3. Step 3: Cross multiply
    98,987.99x = 148,411.47 × 46,368.77
  4. Step 4: Simplify right side
    98,987.99x = 6,881,657,317.79
  5. Step 5: Solve for x
    x = 6,881,657,317.79/98,987.99
  6. Step 6: Final answer
    x = 69,520.12

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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.